Which of the groups of molecules commonly serve as sources of energy for animals?.

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement

What is the one part of the nucleotide  that differs among the other different nucle  tides?