The thing about all dangers being present to ancestors of a species isn't necessary though, humans have adapted different skin tones, facial structures, heights, even hair colors because of their drastically different environments
I can't think of any off the top of my head but I'm sure some other species do this as well
English
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Is a human still not a human? When did you last walk up to an ape and say, "That's a Harry, witless man. I must free him from his apparent stupidity and muteness"?
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Apes are different species though, they've adapted to living in their environment with physical features rather than intelligence like we have