The last "hot house" or period of increased temperature occurred

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.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus