Evidence from impressions left on the ocean floor tell us that the first complex animal developed how many years ago? PLEASE NEED HELP>:

Which level of consumer had access to the smallest apply of energy

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.

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity hurry!