Which factor correlated with human populations losing skin pigmentation? (1 point) O moving away from the poles
moving away from mountainous environments
moving away from shaded environments
moving away from the equator

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of