In the desert white rabbits are more easily seen by predators than brown rabbits. the difference in color causes white rabbits to be eaten by predators more often than their brown counterparts. this causes white rabbits to have a lower population because they do not survive to reproduce as often as brown rabbits. this scenario is an example of

a.
variation in traits
c.
genetic drift
b.
heredity
d.
differential reproduction

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.