The R group is what allows amino acids to form macromolecules with different properties. every amino acid has the same basic structure, the only difference is what the R group is made up of. The similarities allow the amino acids to form a chain while the differences allows them to have different functions. Hope this helped!
A substance that tends to reduce the surface tension of a liquid in which it is dissolved (took that right from dictionary.com)
Answer:
D
Explanation:
we all need that all of then helps to increase erosion rates
