Answer:
The sun
Explanation:
The is because the sun is the souce of energy
D. It's harder body parts. A lot of fossils are of the skull, therefore that would lead one to think that it would be harder<span />
Answer:
Human skin pigmentation is the product of two clines produced by natural selection ... The populations exhibiting maximally depigmented skin are those ... &c., are of the nature which it might have been expected would have been ... The evolution of light pigmentation at high latitudes has long been related ...
Explanation:
