What ecosystem are you talking about ?
Answer:
Your answer is E). Fossils in different layers will obviously be much older/younger than others.
Sleeping on the stomach is "prone," on the back its "supine."
Savannah is the answer you are looking for here.
Plants maintain homeostasis by keeping their stomata open just enough to allow photosynthesis to take place but not so much that they lose an excessive amount of water.
When plant cells use the food they make, the cells respire, taking in oxygen and giving off carbon dioxide.
- Hope this helps
