Molecules that are ___
and
membrane easily.
pass through the cell

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

climate change and pollution

the fossil record provides evidence of a common ancestor to many species.

idk im sorry.