Disruptions to Ecosystems

AP Biology· difficulty 3/5

Biomagnification refers to

  • A

    Increasing diversity of microbial species in nutrient-enriched aquatic ecosystems

  • B

    Increasing concentration of persistent toxins (e.g., DDT, mercury) at higher trophic levels

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  • C

    Increasing population sizes of predators that consume contaminated prey species

  • D

    Increasing reproductive rates of organisms exposed to low-level environmental toxins

Explanation

Toxins that resist degradation accumulate over time and become more concentrated as they pass up the food chain.

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