Because it helps them with finding new researches.
Answer:
<em><u>Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.</u></em>
Explanation:
Non human primates have smaller brains; therefore the birthing process differs by being shorter and less painful.
There is no known living primate has as much difficult giving birth as human beings. The principle reason giving birth is harder for humans is the size of the infant's head compared to the size of the pelvic opening that it has to pass through during birth. However, the size of the pelvic opening is limited by the mechanical demands of walking upright.
