Biomagnification and Energy Transfer
In a lake ecosystem, PCB concentrations are measured at 2 ppm in sediment, 5 ppm in benthic invertebrates, 25 ppm in small fish, and 125 ppm in large predatory fish. What does this data imply about the transfer of energy and toxins between trophic levels?
A
Both energy and toxin transfer are equally efficient
B
Energy transfer is inefficient while toxin transfer is efficient
C
Energy transfer is more efficient than toxin transfer
D
Toxin concentration decreases with increasing body size
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