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Answer to Question #45839 in Other Biology for Souvik

Question #45839
Biomagnification is highest in-
A)Primary consumers.
B)Secondary consumers.
C)Producers.
D)Decomposers.
Please explain.
Expert's answer
Biomagnification is the buildup of certain pollutants, such as DDT, in the bodies of organisms at higher trophic levels in the food
chain. The concentration of a pollutant increase from one link to another. Organisms at lower trophic levels accumulate small amounts. It occurs because a pollutant has low or non-existent rate of internal degradation or excretion. Organisms at the next higher level eat many of these lower-level organisms and hence accumulate larger amounts, especially in fatty tissues. Thus, the highest biomagnification is at the highest level in the food chain and the correct answer is B) Secondary consumers.

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