Why are plants not used that much for medical purposes in the us?

What is a universal way that predation benefits the predator? predation increases mate availability. predation in defense of space. the predator gets the energy it needs to survive. the predator keeps parasites from hurting the species.

The cluster of developing cells from conception until birth is called an

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous