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How do species evolve?

User Mayleen
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Biologists believe that new species evolve from existing species by a process called natural selection. ... Organisms that inherit that favorable new gene are likely to become more abundant than others of the species. Sometimes the population of a species becomes separated into two areas, by geography or by climate.
User Jackinovik
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Answer:

Natural selection.

Step-by-step explanation:

Animals mate with different animals creating a species with different genes that helps their kin live longer or stronger.

User Alexander Zhukov
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