Repost again: Plants and animals (and all other living things) are part of all the natural cycles through food chains and food webs. The four classes of macromolecules used by living things are carbohydrates, lipids, proteins, and nucleic acids. For each class of macromolecule, research what components are needed to make them, and relate the importance of the nitrogen and carbon cycle to the formation of these macromolecules.

c is the correct answer!

answeramino acids;

the species living around the vents are especially good at dispersal.  

deep-sea vent originates on the floor of the ocean when seawater circulates through hot volcanic rocks, usually situated where the new oceanic crust is being produced.  

biological dispersal refers to the movement of species from their location of birth to their site of breeding, or from breeding site to another. similarly, the oceanic dispersal refers to the movement of the species from one land mass to another by sea crossing.