what is the breathing
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Breathing or respiration is the process of taking Oxygen and giving out carbon do oxide.
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The process of respiration , during which air is inhaled into the lungs through the mouth or nose due to muscles contraction and then exhaled due to muscles relaxation
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Breathing (or respiration, or ventilation) is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly by bringing in oxygen and flushing out carbon dioxide.
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