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What is biological magnification? Will t...

What is biological magnification? Will the levels of this magnification be different at different level of the ecosystem?

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Successively increasing concentration of some substance (e.g., pesticides) at various trophic levels of a food chain of organisms is known as biological magnification.
The level of biological magnification will be different at different trophic levels of the ecosystem. Maximum concentration will be at the third and fourth trophic level and concentration of chemical will be less at lower trophic levels.
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