NEET 2019 Model Question Paper 5

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Question : 69 of 180

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In an area, there is a decline in bird populations due to thinning of their egg shell and premature breaking. Probably the reason may be

Eutrophication in a young lake
Biomagnification of DDT in an aquatic food chain
Sharp decline in DO downstream from the point of sewage discharge
Increased predation pressure in the terrestrial food chain

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