The differences and adaptations aren't significant. Humans remain a single species. Skin color eye color, hair color aren't unique, Race is an arbitrary construct.
Infallible sign you're dealing with a moron - refers to ancestry and all evolved adaptations to different environments as "skin color"https://twitter.com/Steven_Swenson/status/962182128552341504 …
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Here's a list of physical traits that differ by race: Gestation period
pelvic opening width
Bone density
Brain vol
Twinning rate
Fast / slow twitch muscle %
Neanderthal ancestry
Testicle to body weight ratio
Many many more - before getting to behavioral differences - Show replies
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