text: Its genetic, different races have different traits.  Blacks are taller than whites, they have lower body fat % and are more athletic.  Certain characteristics are genetic, and others are just society.  Asians are intelligent, its hard to say whether or not this is because they are born with bigger brains, or education is just more emphases in their families.  Someone should do a study that charts how someone of different racial back round goes through life when being raised in a different culture.  If an Asian boy was raised by a black family, would he still do excel in school? Or would he be more athletic?  Its hard to say, but as far a physical attributes go, cultures are made different to adapt to their environment.  It doesn't matter if you believe in evolution or not, black people have dark skin for a reason, its hot as hell where they are from, and the sun is scorching.  this could go on forever, but i hope this helps kind of answer your question.