describe human breathing process in humans for class 7
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The primary organs of the respiratory system are the lungs, which function to take in oxygen and expel carbon dioxide as we breathe. The gas exchange process is performed by the lungs and respiratory system. Air, a mix of oxygen and other gases, is inhaled.
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humans breath oxygen with help of external nostril and internal nostril . which filters or stop the air dust and some pathogenic organisms to enter the body and when air pass through lyrnx ,trachea ,Ol factory chamber, and lung
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