Which of the following are correct? flatworm - hydrostatic
mollusks - skeleton
cnidarians - exoskeleton
echinoderms - endoskeleton
fish - shells

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.

The negative impacts of nonnative species generally outweigh the positive impacts