what is breathing ?
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Breathing (or ventilation) is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly to bring in oxygen and flush out carbon dioxide. ... The body's circulatory system transports these gases to and from the cells, where "cellular respiration" takes place.
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What is breathing?
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Breathing is a process of the intake of air rich in oxygen (inhalation or breathing in) and giving out their which in carbon dioxide (exhalation or breathing out).
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