Chimpanzee for the first one
Answer:
Nitrogen
Explanation:
The nitrogen cycle involves trapping a gas in to compounds in the soil.
Answer:
photosynthesis is the way b plants get their energy
Explanation:
Older layers are toward the bottom.and younger layers toward the top.
The Allee effect is a phenomenon seen in population biology when a small population grows faster when the organisms are at high population density than it would if the population was at low density.