When the Grand Canyon was forming, a population of squirrels were separated into two groups. The north side of the canyon is at a higher elevation and experiences more rainfall than the south side of the canyon. The two squirrel species you see here had a common ancestor, but over time, have evolved into two different species. How did natural selection lead to different species?
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Physics, 21.06.2019 22:30, christson805
The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage
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When the Grand Canyon was forming, a population of squirrels were separated into two groups. The nor...
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