First slide
Water Pollution and its Control
Question

The increase in the concentration of toxicants at successive trophic levels is called

Moderate
Solution

Biomagnification refers to increase in concentration of the toxicant at successive trophic levels. This happens because a toxic substance accumulated by an organism cannot be metabolised or excreted, and is thus passed on to the next higher trophic level. Example - Methylmercury.

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