Because cells are in ever living thing
Answer:
I think it is D.
Explanation:
People who have a fast metabolism dont need it so whats the point, and the others are just random.
Answer: Clouds form when rising air, through expansion, cools to the point where some of the water vapor molecules "clump together" faster than they are torn apart by their thermal energy. Some of that (invisible) water vapor condenses to form (visible) cloud droplets or ice crystals
Explanation: