GENETICS AND EVOLUTION
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Natural selection has been altered because the insects and their predators are killed
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The rate of selection is increased because the pesticides do not kill the insects that are naturally resistant to it.
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The rate of selection has decreased because the pesticides kill only young insects.
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The pesticides have altered natural selection by causing the insect DNA to spontaneously mutate.
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Detailed explanation-1: -What has been the greatest effect of natural selection through the use of pesticides on certain insect populations? The rate of selection has increased because the pesticides do not kill the insects that are naturally resistant to it.
Detailed explanation-2: -The main environmental concerns related to pesticides are soil, water or air pollution and damage to non-target organisms including plants, birds, wildlife, fish and crops.
Detailed explanation-3: -Impacts of pesticides on the environment Pesticides easily contaminate the air, ground and water when they run off from fields, escape storage tanks, are not discarded properly, and especially when they are sprayed aerially.
Detailed explanation-4: -The label is the most important source of information for safe pesticide use. Read it carefully and familiarise yourself with all instructions and warnings before you use the pesticide. The label tells you all you need to know about the product, including usage, mixing and safety instructions.