Why are humans able to live in a variety of places on Earth?

Longer Evolution has given humans certain abilities that allow them to either adapt to their environment or adapt their environment to them, including, but not limited to intelligence, communication, and social inter-dependence

Explanation:

Early humans used to move from place to place to those days. Reason are given below.

Explanation:

200,000 years ago from the present, modern humans have already started to roam around the planet. They learned everything around them. They risked their lives to become more modern. They invented weapons, tools, hunting, agriculture, communication methodologies and more in order to survive.

During the early ages, humans are the most sensitive species on the planet. They have just evolved to be a six sensed animal and have no idea about the planet. However they have learned to survive on the planet by hunting other animals and eating them. Their life cycle seemed to be stuck with some sort of danger all time. So they wanted to move from place to place in order to survive.

When they started to move across continents, geographical location and climate have influenced their behavior and life style. Humans have started to multiply within some suitable geographical locations. They started to improve their life style by adapting the location.

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this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.