What is ATP? why is it an important product of cellular respiration? ATP is stored energy. ATP is an important part because it is the energy that living things that cant go through photosynthesis have to ingest in order to recieve energy
I believe the answers are A. C. D.
The respiratory system regulates oxygen flow, and provides regulation for oxygen blood content. Circulatory system plays a roll in providing enough oxygenated blood to the body
