6. Acorn → Squirrel → Crow → Coyote 1,000 kcal are available for the 1st trophic level, 100
kcal for the 2nd trophic level, 10 kcal for the 3rd
trophic level. How many kcal are available for the
tertiary consumer?
Fill in the organisms and energy amounts on the
pyramid to the right

What do all macromolecules have in common with each other? oa. they all are formed from the same elements. ob. they all have major roles in cell membranesoc. they all act as catalysts in the body. od. they all have peptide bonds between carbon atoms.

Which describes the habitat of a frog?

Crinoids, also known as sea lilies, appear to be sea plants but are not plants at all. crinoids are an echinoderm species which uses anchoring structures called holdfasts to attach themselves to the sea floor. crinoids were most abundant in pennsylvania during the mississippian period, which ranged from 375 to 320 million years ago. fossils of the crinoids shows that during most of this time pennsylvania was that provided favorable conditions for crinoid growth. a) glacial terrain b) a dry and sandy plain c) mostly mountain ranges d) covered by warm, shallow seas