The body cavity of the starfish is called the... A.)madreporite.
B.)coelom.
C.)central disc.
D.)ray.

Coelom

Explanation:

The extensive body cavity (coelom) is modified to form several specialized regions. Two subdivisions of the coelom are the perivisceral coelom and the water-vascular system.

oak trees? ? what was listed

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.