Breathing (respiration or ventilation) is the rhythmic process of moving air into (inhalation) and out of (exhalation) the lungs to enable gas exchange with the internal environment, primarily to remove carbon dioxide and take in oxygen. All aerobic organisms require oxygen for cellular respiration, which extracts energy from food and produces carbon dioxide as a waste product.
Breathing (respiration or ventilation) is the rhythmic process of moving air into (inhalation) and out of (exhalation) the lungs to enable gas exchange with the internal environment, primarily to remove carbon dioxide and take in oxygen. All aerobic organisms require oxygen for cellular respiration, which extracts energy from food and produces carbon dioxide as a waste product.
Source: Wikipedia "Breathing" · CC BY-SA 4.0
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