Answer:
<em>The name for a complex group of organisms is system Hope this helps!</em>
The term "lipid" does not specify a particular chemical structure. Whereas one can write a general formula for an amino acid, nucleic acid, or protein, lipids are much more chemically diverse. Compounds are categorized as lipids based on their greater solubility in organic solvents than in water.
Cartilaginous fish do not contain any bones - their skeleton is made up of cartilage.
The answer is: [A]: "A process that cleans pollution from a local pond" .
_____________________________________________________________
The answer to this question is soften tooth enamel becuase your teeth fall out
