In the human respiratory system, gas exchange occurs across the cells of the alveoli. Alveoli or an alveolus is the deepest part of the human respiratory system. This part of the respiratory system is a place where gas exchange between oxygen and carbon dioxide occurs from inhaled air to the blood cells<span>.</span>
Poaching is what it is called
No they can not
Glad I could help
Answer:
D
Explanation:
Carbon is expelled not used for producing sugars or any of that
