Members of which animal phylum have a true coelom (body cavity)?
a) porifera.
b) echinoderms.
c) cnidaria.
d) ctenophores.

Which of the following shows the correct order in which light information travels through the eye? (2 points) lens, pupil, retina, optic nerve pupil, lens, retina, optic nerve pupil, lens, optic nerve, retina lens, pupil, optic nerve, retina

If animal agriculture was eliminated, how much grain would become available for human consumption?

Why is a mushroom considered a heterotroph