The assault on the purity of the environment is the price that we pay for many of the benefits of modern technology. For the advantage of automotive transportation, we pay a price in smog-induced diseases; for the powerful effects of new insecticides, we pay a price in dwindling wildlife and disturbances in the relation of living things and their surroundings; for nuclear power, we risk the biological hazards of radiation. By increasing agricultural production with fertilizers, we worsen water population.The highly developed nations of the world are not only the immediate beneficiaries of the good that technology can do, that are also the first victims of environmental diseases that technology breeds. In the past, the environmental effects which accompanied technological progress were restricted to a small and relatively short time. the new hazards neither local nor brief. Modern air pollution covers vast areas of continents: Radioactive fallout from the nuclear explosion is worldwide. Radioactive pollutants now on the earth surface will be found there for generations, and in case of Carbon-14, for thousands of years.The widespread use of insecticides has
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The passage emphasis that modern technology |
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According to the passage the increasing use of fertilizers is responsible for |
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The average age of husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is |
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The length of the bridge, which a train 130 meters long and travelling at 45 km/hr. can cross in 30 seconds, is: |
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Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together? |
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If a person walks at 14 km/hr. instead of 10 km/hr., he would have walked 20 km more. The actual distance travelled by him is: |
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M and N entered into partnership with capitals in the ratio 4: 5. After 3 months, M withdrew of his capital and N withdrew 1/5 of his capital. At the end of 10 months, the gain was Rs. 760. What is Ms share in the profit? |
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In a test, sixty percent students passed in Maths and 65% in History, 40% passed in both of these subjects. If 90 students failed in maths and history both, then what is the total number of students? |
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A man can row at 10 km/hr. in still water. If the velocity of current is 2 km/hr. and it takes him 10 hours to row to a place and come back, how far is the place? |
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In a secondary school the seats for Maths, physics and social studies are in the ratio 8: 5: 7. there is a proposal to increase these seats by 75%, 40% and 50% respectively. What will be the new ratio? |
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