In a marsh community, aquatic plankton contain 0.04 ppm of DDT, small fish contain 0.30 ppm of DDT, larger fish contain 1.5 ppm of DDT, and cormorants (fish-eating birds) contain 24 ppm of DDT. This is an example of

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This is an example of biomagnification, where the concentration of a pollutant (in this case, DDT) increases at each successive level of the food chain.

In a Marsh Community, Aquatic Plankton Contain 0