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How has DDT caused a decline in the bird population?

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DDT is an organic compound and is a potent pesticide. The predator birds are at higher risk of having an extremely high level of DDT in their body. DDT is resistant to metabolism by living beings and hence tends to accumulate. The presence of DDT in a bird’s body leads to thinning of eggshells and their premature breaking. This explains the declining population of birds because of DDT.

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