What would happen if grasses and shrubs were removed from an ecosystem? what would happen if grasses and shrubs were removed from an ecosystem?

Sea stars, sea urchins, sand dollars, and brittle stars are all memeber of a group, what is the common name of the group they are all in

Study this image which statement best describes the rock shown check all that apply

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.