HAve you heard about reading it more? Adaptation where any animal iand humans in a diff enviroment will start to adapt to the enviorment. Say for example the Ande's: there genes took time to start changing to adept the harsh climate and the extreme alitutde. There dark skiinned and have bigger lungs then most humans. And specvee I jkust proved you wrong right there. Andes is a damn cold place and their dark skinned. Ive seen in africa where there light skin. And there not pigemented. Its called Melanin