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How dangerous chemicals like polychlorinated biphenyl become concentrated in the body tissues of water organisms? These become concentrated through ________. 
A.siltation
B.oxygen depletion
C.biological magnification D.eutrophication​

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Answer:

The resistance of PCBs to decomposition ensures that they remain in soils and bodies of water for many years, where they become increasingly concentrated in the fatty tissue of organisms higher up in the food chain.

C.

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Explanation:

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