Answer:
Lungs
Explanation: The two organ systems that work together to provide the cells with oxygen and remove carbon dixoide from the body are the lungs.
determine the percent of composition
A gland is an organ that excretes chemical fluids to discharge into the surroundings or for use in the body.
A. 6.0 mol H₂O
Explanation:
3 mol O₂ x = 6 mol H₂O