The keystone species is the one at the bottom of the pyramid, if we look at it like a pyramid. If the grass dies, then the deer cannot get food and die, and the predator cannot eat and dies, and the whole ecosystem can fall apart.
Answer:
forward reaction rate equals reverse reaction rate
Explanation:
Cuticles antennae auditory ossicles are parts of arthropods bodies that allow them to breathe air
I think the answer is F<span>ossil shells on top of mountains</span>
