NEET Biology question

Not in NEET syllabus

In an area where DDT had been used extensively, the population of birds declined significantly because

(A)Snake were feeding exclusively on birds
(B)Many of the bird eggs laid, did not hatchCorrect
(C)Bird stopped laying eggs
(D)None of the above

Answer: (B)

Solution

DDT accumulated in birds disturbs calcium metabolism, causing eggshells to become thin and fragile; many eggs consequently broke prematurely or failed to hatch, directly reducing the number of surviving

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Question ID VK-130066