Answer:
Population density. Population distribution.
Explanation:
The best answer is c) trust me
The amino acids in a polypeptide chain are linked by peptide bonds. Once linked in the protein chain, an individual amino acid is called a residue, and the linked series of carbon, nitrogen, and oxygen atomsare known as the main chain or protein backbone.
A, they use the same bases but in a different order
hope this helped!
