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Practice problem

Gradualism — Definition & Examples

By Gabi Slizewska
Two models for the rate of speciation. A shows lines slowly curving out. B shows straight lines with a few places where they rapidly branch away.

Image by Miguel Chavez, modified by SunOfErat Public domain via Wikimedia Commons

Which diagram shows gradualism?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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