Which of the following is an example of density-dependent regulation in a population?

Food availability is a density-dependent factor because it becomes limited as population size increases.

Which of the following statements about energy flow in ecosystems is correct?

Only about 10% of energy is passed from one trophic level to the next, with most energy lost as heat.

Biology — Organisms and Population

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Which type of selection favors individuals with traits that help them avoid predation?

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