Can you name another genetic variation among humans that might be an adaptation to the environment? Why do you think it fits the category of adaptation?

dark skin color.

Explanation:

darker skin colors where more prominent in places closest to the equator.

In places such as russia, majority of people have lighter skin tones, showing that its an adaptation to the enviroment

hello there,

igneous rock formed from below the surface would have more crystals because

answer: because magma cools more slowly than lava

im not intirely sure but i think the anwser is d relative humidity