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Populations can become geographically isolated by barriers such as mountains or rivers. These barriers reproductively isolate the populations by restricting or preventing gene flow between them, leading to genetic divergence. Other kinds of geographic features, such as roads, canals, and even agricultural fields can have similar effects.

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Q: The situation of populations by barriers such as rivers mountains or bodies of water is called what?
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The separation of populations by barriers such as rivers mountains or bodies of whaters is called?

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