Class 12 Biology Environmental Issues Pollution

Medium

What are the effects of high concentrations of $DDT$ on birds?

A
It disturbs calcium metabolism in birds.
B
It causes thinning of eggshells.
C
It leads to premature breaking of eggshells.
D
All of the above.

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Class 12 Questions

Class 12

Biology Questions

Chapter

Environmental Issues

Subtopic

Pollution

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