Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

Farming the sea means

Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

The harvest of the sea can be increased by

Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

The harvest of the sea can also be increased by

Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

The sea farmer’s first job will be to

Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

Intensive underwater farming will be particularly important for

Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

The writer says one square mile of sea

Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

“In the sea farming of the future it should not be necessary to spread fertilizer in the sea”. The clause means

Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

“It might well turn out that the process would be too expensive” means

Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

A flounder is a

Read the following passage carefully and answer the questions given below it. 
Of all the sea’s possibilities for man’s future, the greatest may be its promise of an important increase in the world’s food supply. Square mile after square mile, the sea is estimated to be more productive than the land. Yet at present the oceans supply only one or two percent of man’s food. Despite all he is learning about the sea, man’s relationship to it is still primitive; he is a hunter rather than a harvester. Along some coasts oyster growers set out beds of oysters and fence out the oyster’s enemies to increase the yield. In the Philippines, Indonesia, Japan and China, people already grow fish and prawns in freshwater ponds. But this is just the beginning. In the future, to meet the great needs of a rapidly expanding world population, man will have to farm the sea as he has for so long farmed the land.
There are many things that scientists can do to increase the sea’s yield of food. One was experimented with over half a century ago by the British biologist Walter, who transplanted flounders from their crowded home near the Dutch coast to a similar area in the middle of the North Sea. He did this several times and found the method successful. The transplanted flounders grew to three times the size of their brothers in the crowded Dutch waters. Striped bass, shad and soft-shelled clams have been successfully transplanted from the east to the west coast of North America, and the North American Chinook salmon now lives and breeds around New Zealand.
In the sea farming of the future it should not be necessary to spread fertilizer in the seas as farmers do on land. But it may be useful to stimulate the flow of nutrients to those areas most conveniently accessible for sea farming. Columbus o’ Donnell Iselin, an American oceanographer, suggests that we can stimulate up-welling of mineral-rich cold water along our coast by using jet engines placed on shore or on big bouys to pump compressed air through long tubes to the deep sea layers. The rising bubbles of air would carry nutrients up with them. Another Iselin idea is to cause an up-welling in the Gulf Stream by anchoring a quantity of submerged buoys with very large boards attached to them deep in the water near the Florida Strait. Each of these boards would be fixed at an angle so that they could deflect the cold seabed waters upwards. By this means, the writer predicts, we could probably fetch enough mineral nutrients up to the surface to turn the Gulf Stream off the south-eastern United States into an area rich in plankton. This would inevitably result in an improvement in the fishing industry of the South Atlantic States.
When the time comes to farm the sea, Sir Alister Hardy of Oxford University has said, man will go under water to breed fish. As a first step he will have to make a distinction between creatures he can eat and those he cannot. The latter, says Sir Alister, will have to be classified as weeds and taken out. As long ago as World War I, a marine biologist calculated that ‘weeds’, i.e. inedible creatures like brittle stars and starfish, eat up all but a very small percentage of the fish food available in the sea. To clear away these weeds so that the fish can get at least 20 percent of the available food, the sea farmer of the future will have to use completely new techniques. Professor Hardy expects that sea farmers, working for periods of about two hours at a time, ‘from a mother ship above…..will be driving submarine tractors down below.’ These tractors will be used to clear destructive weeds off the ocean bed. Later, when harvest time comes, the same tractors will pull nets through the same waters and collect fish that have grown fat on their unshared sea-bed food.
Sir Mister foresees such scenes in the coastal waters around Europe, but we are only likely to see them in the distant future. Europe is already quite well provided with food resources. Like the United States, whose requirements for sea food are expected to double in the next twenty years, Europe can probably meet its own expanding needs in the future simply by improving present fishery techniques. But for many countries in Asia, Africa and Latin America with rocketing birth rates, survival may depend on the development of some sort of intensive underwater farming. Pessimists predict that man will someday be forced to eat plankton. Though this always remains a possibility, there are two things which made it unlikely. In the first place, man is not really so efficient at collecting plankton as are the whales, and so it might well turn out that the process would be too expensive. In the second place, a good deal of it does not taste very pleasant.

Which of the following statement is correct?

Read the following passage carefully and answer the questions given below it. 
The very shape of man’s body is such that makes him a restless creature. He cannot do without work. It is truly said, “An idle man’s brain is the devil’s workshop.”
The whole civilization of man has evolved itself only through hard work. All the inventions and discoveries of science are the result of hard work. Constant work improv­ing upon its own findings progressively, has enabled man to tread on the moon.
Even in our daily life we see that hard work pays dividends. A student who works regularly and systematically shows better results than the one who does not do so. Similarly, a player who practices regularly on the field is much better than the other one. Work not only leads to better results in the long run, but also increases our self- confidence. Work may be physical or intel­lectual. It is important in all its forms. But it must be constructive. Great nations of the world like Japan, Germany and China have emerged strong only through hard work nut in individually and collectively.
In India we worship lord Vishwakarma, the great god of the workers but, unfortu­nately we are a nation of shirkers. We work little and we work even less for our country. One can work better and more efficiently if one is dedicated to some cause. Let us all be dedicated to the cause of our country. Then we shall be able to make great sacrifices as our freedom fighters did. Only then we can see our country great and strong. And we ourselves can be great and strong only if our country is so. There is no short-cut, no escape route. Hard work is the only way out. In whatever field we are, we must do our duty with utmost devotion and conscientious­ness.

Which one of the following messages the author wants to convey through the passage?

Read the following passage carefully and answer the questions given below it. 
The very shape of man’s body is such that makes him a restless creature. He cannot do without work. It is truly said, “An idle man’s brain is the devil’s workshop.”
The whole civilization of man has evolved itself only through hard work. All the inventions and discoveries of science are the result of hard work. Constant work improv­ing upon its own findings progressively, has enabled man to tread on the moon.
Even in our daily life we see that hard work pays dividends. A student who works regularly and systematically shows better results than the one who does not do so. Similarly, a player who practices regularly on the field is much better than the other one. Work not only leads to better results in the long run, but also increases our self- confidence. Work may be physical or intel­lectual. It is important in all its forms. But it must be constructive. Great nations of the world like Japan, Germany and China have emerged strong only through hard work nut in individually and collectively.
In India we worship lord Vishwakarma, the great god of the workers but, unfortu­nately we are a nation of shirkers. We work little and we work even less for our country. One can work better and more efficiently if one is dedicated to some cause. Let us all be dedicated to the cause of our country. Then we shall be able to make great sacrifices as our freedom fighters did. Only then we can see our country great and strong. And we ourselves can be great and strong only if our country is so. There is no short-cut, no escape route. Hard work is the only way out. In whatever field we are, we must do our duty with utmost devotion and conscientious­ness.

What, according to the passage, is the cause of our self-confidence?

Read the following passage carefully and answer the questions given below it. 
The very shape of man’s body is such that makes him a restless creature. He cannot do without work. It is truly said, “An idle man’s brain is the devil’s workshop.”
The whole civilization of man has evolved itself only through hard work. All the inventions and discoveries of science are the result of hard work. Constant work improv­ing upon its own findings progressively, has enabled man to tread on the moon.
Even in our daily life we see that hard work pays dividends. A student who works regularly and systematically shows better results than the one who does not do so. Similarly, a player who practices regularly on the field is much better than the other one. Work not only leads to better results in the long run, but also increases our self- confidence. Work may be physical or intel­lectual. It is important in all its forms. But it must be constructive. Great nations of the world like Japan, Germany and China have emerged strong only through hard work nut in individually and collectively.
In India we worship lord Vishwakarma, the great god of the workers but, unfortu­nately we are a nation of shirkers. We work little and we work even less for our country. One can work better and more efficiently if one is dedicated to some cause. Let us all be dedicated to the cause of our country. Then we shall be able to make great sacrifices as our freedom fighters did. Only then we can see our country great and strong. And we ourselves can be great and strong only if our country is so. There is no short-cut, no escape route. Hard work is the only way out. In whatever field we are, we must do our duty with utmost devotion and conscientious­ness.

What, according to the passage, is necessary for the effective work?

Read the following passage carefully and answer the questions given below it. 
The very shape of man’s body is such that makes him a restless creature. He cannot do without work. It is truly said, “An idle man’s brain is the devil’s workshop.”
The whole civilization of man has evolved itself only through hard work. All the inventions and discoveries of science are the result of hard work. Constant work improv­ing upon its own findings progressively, has enabled man to tread on the moon.
Even in our daily life we see that hard work pays dividends. A student who works regularly and systematically shows better results than the one who does not do so. Similarly, a player who practices regularly on the field is much better than the other one. Work not only leads to better results in the long run, but also increases our self- confidence. Work may be physical or intel­lectual. It is important in all its forms. But it must be constructive. Great nations of the world like Japan, Germany and China have emerged strong only through hard work nut in individually and collectively.
In India we worship lord Vishwakarma, the great god of the workers but, unfortu­nately we are a nation of shirkers. We work little and we work even less for our country. One can work better and more efficiently if one is dedicated to some cause. Let us all be dedicated to the cause of our country. Then we shall be able to make great sacrifices as our freedom fighters did. Only then we can see our country great and strong. And we ourselves can be great and strong only if our country is so. There is no short-cut, no escape route. Hard work is the only way out. In whatever field we are, we must do our duty with utmost devotion and conscientious­ness.

The great nations have become stronger as a result of

Read the following passage carefully and answer the questions given below it. 
The very shape of man’s body is such that makes him a restless creature. He cannot do without work. It is truly said, “An idle man’s brain is the devil’s workshop.”
The whole civilization of man has evolved itself only through hard work. All the inventions and discoveries of science are the result of hard work. Constant work improv­ing upon its own findings progressively, has enabled man to tread on the moon.
Even in our daily life we see that hard work pays dividends. A student who works regularly and systematically shows better results than the one who does not do so. Similarly, a player who practices regularly on the field is much better than the other one. Work not only leads to better results in the long run, but also increases our self- confidence. Work may be physical or intel­lectual. It is important in all its forms. But it must be constructive. Great nations of the world like Japan, Germany and China have emerged strong only through hard work nut in individually and collectively.
In India we worship lord Vishwakarma, the great god of the workers but, unfortu­nately we are a nation of shirkers. We work little and we work even less for our country. One can work better and more efficiently if one is dedicated to some cause. Let us all be dedicated to the cause of our country. Then we shall be able to make great sacrifices as our freedom fighters did. Only then we can see our country great and strong. And we ourselves can be great and strong only if our country is so. There is no short-cut, no escape route. Hard work is the only way out. In whatever field we are, we must do our duty with utmost devotion and conscientious­ness.

Which of the following statements is NOT TRUE in the context of the passage?