the act or process of breathing: the inhaling of oxygen and the exhaling of carbon dioxide. 2: the process by which cells use oxygen to break down sugar and obtain energy. respiration.
the act or process of breathing : the inhaling of oxygen and the exhaling of carbon dioxide. 2 : the process by which cells use oxygen to break down sugar and obtain energy-respiration.
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the act or process of breathing: the inhaling of oxygen and the exhaling of carbon dioxide. 2: the process by which cells use oxygen to break down sugar and obtain energy. respiration.
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Answer:
the act or process of breathing : the inhaling of oxygen and the exhaling of carbon dioxide. 2 : the process by which cells use oxygen to break down sugar and obtain energy-respiration.