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A species is often defined as a set of organisms that reproduce in nature. If members of the species change so much that they can no longer reproduce with the other members of the species, those members are considered to be a new species. As an example: If a species of birds becomes separated and over time one group's mating dance is two hops to the right and one to the left while the other group's dance is two hops to the left and one to the right. Those two groups will no longer be able to interbreed because the females won't be properly impressed if the dance is performed "wrong".

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Anya King

Lvl 10
3y ago

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