Increasing concentration of accumulated pollutant along food chain is
A
Biomagnification
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B
Bioaccumulation
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C
Eutrophication
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D
Nutrient cycling
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Solution
The correct option is A Biomagnification A few toxic substances, often present in industrial wastewaters, can undergo biological magnification (biomagnification) in the aquatic food chain. Biomagnification refers to an increase in the concentration of the toxicant at successive trophic levels. This happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, instead is stored in the adipose tissue and is thus passed on to the next higher trophic level in a food chain.