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Food Chain

The increase ...

Question

The increase in concentration of a chemical in organisms as we move from lower to higher trophic levels is called .

A

eutrophication

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B

biomagnification

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C

BOD

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Solution

The correct option is B biomagnification
$∙$ As we move from lower to higher trophic levels, the concentration of toxic materials accumulated in the body of an organism increases. This process is called biomagnification.
$∙$ Eutrophication is the increase in amount of nutrients in a water body, which leads to algal bloom. This increases the biological oxygen demand (BOD) of the water body.

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