A) bringing disturbance in calcium metabolism
B) thinning of egg shell
C) premature breaking of eggs
D) All of the above
Correct Answer: D
Solution :
The accumulation of DDT in the tissues of bird population interferred with the deposition of calcium in their egg shells. When these birds tried to incubate their eggs, the weight of the parents broke the shells of affected eggs, resulting in decline in their reproductive rate.
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