Respuesta :
Answer: A. Breathing provides and removes gases for cellular respiration.
Explanation: Two steps out of three require oxygen in cellular respiration. Breathing provides this oxygen needed. At the end of cellular respiration, it releases CO2 (carbon dioxide). Breathing removes this gas.
Explanation: Two steps out of three require oxygen in cellular respiration. Breathing provides this oxygen needed. At the end of cellular respiration, it releases CO2 (carbon dioxide). Breathing removes this gas.