Researchers studying chimpanzees in the wild report that they have found at least 39 customs that are specific to local chimpanzee groups. Some researchers believe that these differences in tool use, grooming, and courtship rituals can be accounted for by:

carbon

explanation:

i believe it is c: genes for body color and wing size are inherited separately from each parent.

the answer is z.

the human body has five levels of organization. level 1: cells. cells are the basic units of life and form the first level of organization. cells in the human body have specific functions. examples include nerve cells, blood cells, liver cells, and so on.