EARTH SCIENCE
CLIMATE AND ENVIRONMENTAL CHANGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Precipitation helps to break down pesticides.
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It takes humans over 50 years to analyze a glacier.
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DDT and other pesticides increase glacier runoff during the summer.
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The decision of one human generation may have an impact on future generations.
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Detailed explanation-1: -DDT and other pesticides used over 50 years ago are still affecting the environment today. Scientists have found these substances in recent glacier runoff. Glacier runoff occurs during the summer, when precipitation that has fallen on glaciers during the winter is released.
Detailed explanation-2: -Ice layers from existing glaciers have been analyzed. The results of this analysis show that the concentrations of DDT and other pesticides were highest about 10 years after the use of these substances was banned. This information shows that. DDT and other pesticides cause glacier runoff during the summer.
Detailed explanation-3: -DDE decreases the reproductive rate of birds by causing eggshell thinning and embryo deaths (14). DDT is highly toxic to aquatic animals (14). DDT affects various systems in aquatic animals including the heart and brain (14). DDT is highly toxic to fish (14).
Detailed explanation-4: -High amounts of DDT exposure can lead to problems with the nervous system and liver. Animal studies conducted with DDT indicate very high doses may cause effects on the nervous system, kidney, liver and immune system, but it is not known if humans are affected in the same way as animals.