After rocks are changed by the processes of weathering and erosion they became what?

Weathering breaks down the rocks and erosion breaks rocks down even further and then moves them. Forces (i.e. wind, water, etc.) move the rock pieces. Then they mix with matter like sand to become sediment (gravel, sand, or mud carried by wind or water).

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.