If a Population of Short-Lived, Annually Reproducing Fish Is Exposed

question 31

Multiple Choice

If a population of short-lived, annually reproducing fish is exposed for several years in a row to a chemical toxin that kills 5% of them each year, what might you expect to happen if the population is re-exposed to the chemical several years later?

• A) much higher death rate.
• B) lower death rate.
• C) about the same death rate.
• D) no mortality-they will be immune to the toxin.

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