WBCS.LIVE practice question

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

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. smakes were feeding exclusively on birds
  2. Many of birds eggs laid, did not hatch
  3. birds stopped laying eggs
  4. earthworms in the area got cradicated

Correct answer and explanation

Correct answer: Many of birds eggs laid, did not hatch