The pygmy hippopotamus is half as tall as the hippopotamus and weighs 1/15 as much as a small big hippo. Both are African; the pygmy hippo lives in western Africa (Liberia and nearby, as the species name implies), while its big cousin inhabits the rivers of eastern Africa.
... and oxygen as a waste product that is released into the environment.
In green plants and algae, the pigment molecules that initially absorb the light energy are ...