Skin color isn’t the only physical difference…. Everyone recognizes race. Africans, Europeans, and Asians can be distinguished at a glance because the races differ so obviously from each other. Although the differences are popularly referred to as “skin color,” as if this were where they began and ended, color is one of the least important ways in which the races differ. Although many physiological differences are well established and easy to measure, they are often completely unknown to the

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