Discussion
Concentration of toxic chemicals through food-chain result into :
Answer: C
The result is Biomagnification.
Persistent toxic substances such as DDT or mercury are not broken down or excreted easily. As each organism eats many smaller ones, the chemical becomes more concentrated at each higher level of the food chain, so top predators carry the highest concentrations. This increase along the food chain is biomagnification.
Accumulation (bioaccumulation) is the build-up within a single organism over time, while excretion and elimination are the removal of a substance from the body.
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