Answer:
D
Explanation:
Amino acids is to protein.
remember the amino acids are the building blocks of the macromolecule protein, in the same way the simple sugar like glucose is a building block for starch.
Constructive plate boundaries
Though technically there are six levels of organization in ecology, there do exist some sources which only identify five levels, namely organism, population, communities, ecosystem, and biome; excluding biosphere from the list.
Hope i Helped! :)