FORESTRY
ECOLOGY AND ENVIRONMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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BIRDS STOP LAYING EGGS
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EEG DID NOT HATCH
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PREDATION OF EGGS INCREASED
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NONE OF THE ABOVE
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Detailed explanation-1: -The high concentration of DDT interferes with the calcium metabolism of birds and induces eggshell thinning. Premature breakage. This causes the population to decrease. Additional Information: Bald eagle and other bird populations collapsed as DDT thinned their eggs, killing their embryos.
Detailed explanation-2: -It is present in low amount in water and reaches a high concentration in fish-eating birds through biomagnification. Very high concentrations of DDT disturb calcium metabolism in birds, which causes thinning of eggshell and their premature breaking, eventually causing decline in bird populations.
Detailed explanation-3: -How is the local bird population affected by the use of DDT in crops by the farmers ? Answer: High concentrations of DDT disrupt calcium metabolism in birds as a result of biomagnification through an aquatic food chain, causing egg shell thinning and early breaking, eventually leading to bird population reduction.