The state of maintaining a stable internal environment regardless of changing external conditions is called ?

Homeostasis

Explanation:

we learned this in class last year hope it helped!!

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.