Similar theory of why black people have lovely full lips, they're evolved from very hot climates in African countries and lips are a body's cooling mechanism, so the bigger the lips, the cooler the body is.
The reason a lot of white people have thin lips is the opposite of the thing about black people I posted above, so I guess when it's cold having thin lips is a good thing?
I thought Asians had slanted eyes because it gave them an advantage crossing the steppes which were extremely dusty. Idk, it could be both. Yet, wouldnt northern white europeans have slanted eyes as well since they originate from cold, snowy regions as well?
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