Final answer:
Bioaccumulation refers to the process in which substances accumulate in the tissues of organisms at higher levels in a food chain, making them particularly dangerous.
Step-by-step explanation:
Bioaccumulation refers to the process by which substances accumulate in the tissues of organisms at higher levels in a food chain. This can make these substances particularly dangerous because they will remain in the organisms that consume them. As a result, the concentration of these substances can increase as they move up the food chain, posing a higher risk to higher-level consumers, including humans. For example, when fish consume smaller organisms contaminated with mercury, the mercury builds up in their tissues and can be harmful to humans who consume the fish.
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