what is breathing.long answer.
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Breathing is the process by which air rich in oxygen is taken inside the body of an organism and air rich in carbon dioxide is expelled from the body (with the help of breathing organs). ... Both, inhalation and exhalation take place regularly during breathing. A breath means one inhalation plus one exhalation.
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Breathing 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.
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