2 Points Which macromolecules have a basic unit that is composed of phosphate, a
sugar ring, and one of five different bases?

The macromolecule that is composed of phosphate, a sugar ring, and one of five different bases is called nucleotides.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.