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AP® Environmental Science

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Moderate

Coal Emissions in Food Chain

APES-ILKVGF

Burning coal results in mercury emissions which enter aquatic ecosystems. Organisms in lower trophic levels in the food chain have lower mercury concentrations than those in higher trophic levels.

This demonstrates the phenomenon known as

A

trophic cascade.

B

LD-50.

C

bioaccumulation.

D

cation exchange.

E

biomagnification.