Provides evidence of evolution and can classify species and find common relatives
Answer: Base pairs are formed when adenine forms a hydrogen bond with thymine, or cytosine forms a hydrogen bond with guanine. The second part of a nucleotide is the phosphate, which differentiates the nucleotide molecule from a nucleoside molecule.
Explanation:
A because if you look it up phytoplankton does uses photosynthesis to produce food.