Complete the sentences to explain how the oceans on earth were formed. water arrived on earth in the form of from comets and meteoroids. earth’s surface was enough to turn it into that, once it cooled, brought rains to fill the oceans.\

Which phrases describe oxygen's roles in earth’s atmosphere? check all that apply. allows fuels to burn forms clouds that produce rain is the gas that animals breathe is used by plants to produce food forms ozone that absorbs the sun's harmful rays