The highly developed nations of the world are not only the immediate beneficiaries of the good that technology can do, which 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's surface will be found there for generations, and in the case of Carbon-14, for thousands of years.
Insecticides:
Result:
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Option 2: "caused imbalance in the relationship between living beings and their environment"
Explanation: This option accurately reflects the text's assertion that the powerful effects of new insecticides disturb the relationship between living things and their surroundings. The phrase 'imbalance in the relationship' aligns with the text's discussion of how insecticides negatively impact ecosystems.
Option 1: "reduced the number of wild animals"
Explanation: While the text mentions that the use of insecticides leads to dwindling wildlife, it does not state that insecticides directly reduced the number of wild animals. This option oversimplifies the issue and does not capture the broader context of ecological imbalance.
Option 3: "eliminated diseases by killing mosquitoes and flies"
Explanation: This option presents a positive outcome of insecticides that is not supported by the text. The text focuses on the negative consequences of insecticides, such as ecological disturbances, rather than any benefits related to disease elimination.
Option 4: "caused biological hazards"
Explanation: Although the text discusses biological hazards in relation to nuclear power, it does not specifically attribute biological hazards to insecticides. This option is too broad and does not directly connect to the specific effects of insecticides mentioned in the text.
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