This illustration shows a kind of animal that is a free-living organism.

what is the common name of the group that contains this organism?

a.
ribbon worms

b.
arthropods

c.
flatworms

d.
roundworms

Which spheres are involved when sedimentary rocks formed from parts of seashells at the bottom of the ocean? a.) biosphere, atmosphere, geosphereb.) geosphere, hydrosphere, biosphere c.) geosphere, exosphere, hydrosphered.) hydrosphere, biosphere, atmosphere

The (blank) states that all loving things are made of cells.

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?