Biomagnification of DDT in aquatic food chain leads to

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a decline in bird populations by causing premature breaking of eggshells

an increase in bird populations by increasing the number of their prey animals (fish)

algal blooms due to an increase in nutrients in the water body

outbreak of serious diseases such as dysentery, typhoid, jaundice, and cholera

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Detailed Solution

DDT is a pesticide that was widely used to control insects such as mosquitoes and agricultural pests. However, DDT is also toxic to birds, as it can accumulate in their bodies and interfere with their calcium metabolism, leading to thinning of their eggshells and reduced reproductive success.

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