Asymbiotic relationship in which two different organisms benefit from living together is called

Mutualism - GradPoint answer (Mutual means not good with each other but not bad, kinda have to lol)

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.