Large predators can also be problematic to eat because of bioaccumulation and biomagnification of toxins such as lead or mercury in their habitats . Define the terms bioaccumulation and biomagnification . Why should they be considered when discussing food chains and trophic levels .

Bioaccumulation is the process by which toxins enter the food web by building up in individual organisms, while biomagnification is the process by which toxins are passed from one trophic level to the next (and thereby increase in concentration) within a food web.

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