Oxygen molecules diffuse fast because the main gas in a cell in Carbon Dioxide its like if it was 99.9 percent carbon that .1 percent is oxygen and carbon dioxide being what it is. Automatically overrides the amount of oxygen. Basically it is nonpolar
B, is the answer. I believe.
It is called coevolution, when two species influence each other's speciation.
The green sample possibly contains algae or some other sort of bacteria