History, 23.06.2019 19:00 Arielledt10

What do scientists believe is the determining factor that causes skin color variations in groups of humans around the world? a. genetics – two people with the same skin color are more likely to be genetically related, even if they come from different parts of the world b. diet c. ultraviolet radiation exposure in a society over a long period of time d. vitamin deficiencies

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