Question

What factors caused the correlation between the reduction in skin pigmentation in humans and migration of human populations away from the equator?

A. The exposure of human populations to less UV light required a reduction in melanin to produce more vitamin D for healthier bones.

B. The exposure of human populations to new sources of food common to the polar regions caused changes in physiology that resulted in the production of less melanin.

C. The exposure of human populations to predators only common to the polar regions caused them to adapt by camouflaging better with the environment.

D. The exposure of human populations to new diseases common to the polar regions interferred with melanin production causing lighter skin.

Answer 1

U sure

Answer 2

A. The exposure of human populations to less UV light required a reduction in melanin to produce more vitamin D for healthier bones.

Answer 3

Yes, I'm sure. The reduction in melanin in human populations is primarily caused by the need to produce vitamin D in regions with less UV light, as melanin can inhibit the production of vitamin D. This adaptation allowed human populations to survive in regions with less UV light, such as further away from the equator, where there is less intense sunlight. This is supported by scientific research and evolutionary theories.