Answer:
a
Explanation:
The answer is a because the population will change due to ones environment. For example, say there are a lot of mice in an area, but all of a sudden, it starts to flood. Some of the mice might die due to this environmental change, causing the population to decrease. The population changed, due to the change in environment. Therefor, the answer is a.
Answer:3/4
Explanation:4 possibilities, 3 dominant
Umm air, water pressure, I'm giving ideas, that is confusing. They come out in high tide.
I believe the correct answer would be metabolism. This comprises all of the reactions inside organisms that allows them to sustain life. There are two categories of such namely, anabolism and catabolism. Hope this answers the question.