Are cellular macromolecules containing hydrogen, oxygen, nitrogen, carbon and phosphorous.

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.

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm