There was a original creature that evolved that all humans take common evolution from it could be said as Adam but I don't like that term because it was not as the bible says, but basically we could trace all humans back to a common ancestor that had children, that evolved into homo-sapien from a greater ape from that every human was generated via sexual reproduction from this common proto-human's children, grand children, great grand children, and etc. such as the different races moved to different climates which made them evolve slightly differently such as skin color as population increased, but the origin of the human species was in Africa then as population grew there was the need for the humans to move into other areas because of scarcity of food which gradually made them evolve to live in those habitats over many years also keeping the traits from the group that moved into that area to the point that Asians are slightly better evolved to live in Asia and Africans, Africa and etc. As globalization happened and housing happened this became less of a issue as all people can live everywhere due to clothing and housing, that why it is so bad to be homeless some people are not evolved to live in that area during certain times of the year the weather can literally kill certain people depending on their acclimation to the area, I can remember such an example of a girl from Alaska that was at Yellowstone National Park and it was maybe 90 degrees and she was going through heat exhaustion in that temperature from being used to being in Alaska temperatures which are much lower than that, while others were absolutely fine in that weather being acclimated to that type of heat. As your body lives in a condition your body starts to change to expect that condition and survive in that condition.
Edited by VictorMedvil, 19 July 2019 - 01:58 AM.