Question

when animals perform cellular respiration, their primary goal is to create what? oxygen, because without it, animals would not be able to breathe carbon dioxide, because without it, plants could not photosynthesize glucose, because without it, there would not be any food for themselves or any other living thing atp, because without it cells cannot perform tasks that require energy

Explanation:

Cellular respiration is a metabolic process. Its main purpose is to generate ATP (adenosine triphosphate). ATP is the energy - currency of the cell. Animals take in glucose and oxygen. Through a series of chemical reactions (glycolysis, Krebs cycle, electron transport chain), energy is extracted from glucose and stored in the form of ATP.
Oxygen is a reactant in cellular respiration (not a product in the context of what animals create through cellular respiration for their own use). Carbon dioxide is a waste product. Glucose is what is broken down (not created) in cellular respiration.

Answer:

ATP, because without it cells cannot perform tasks that require energy.