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Which statement best describes ecological succession?
It is always caused by human intervention.
It occurs after a disturbance.
It never occurs in a predictable pattern.
It is a series of rapid changes in an ecosystem.

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Answered by GPT-5 mini AI
Answer: It occurs after a disturbance.

Explanation: Ecological succession is the gradual, directional change in species composition and community structure over time following a disturbance (secondary succession) or on newly exposed substrates (primary succession). It is not always caused by humans, is often somewhat predictable in stages, and typically proceeds over long time scales rather than as rapid changes.