Skin color variations were caused by: a). The change in melanin, the skin's brown pigment

b). The climate of where people migrated to

c)Diets that are rich in Vitamin D

d) All of the above

A is your answer

Explanation:

brainlist??

I'm certain the answer is D: All of the above, but please correct me if I'm wrong ^^

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

cock topography

the study of the surface of a large voluptuous cock.

look at that sorostitute right she's a cock topographer!

what classes are you taking this

cock topography!