Multiple Choice Questions on In an area where DDT had been used extensively the population of birds declined significantly becaus........... for UPSC Civil Services Examination (General Studies) Preparation

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Multiple Choice Questions

In an area where DDT had been used extensively the population of birds declined significantly becaus...........

Environment and Ecology Pollution
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    In an area where DDT had been used extensively - the population of birds declined significantly because

    Cobras were feeding exclusively on birds

    Incorrect Answer

    Many of the birds eggs did not hatch

    Correct Answer

    Birds stopped laying eggs

    Incorrect Answer

    Earthworms in the area got eradicated

    Incorrect Answer
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    Explanation:

    In an area where DDT had been used extensively - the population of birds declined significantly because eggs didn't hatch due to weakened egg shell (Biomagnification ill effects)

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