what are the two steps involved in respiration? please don't give answers answers from Google or wikapedia please
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1. Atmospheric air is drawn in to obtain oxygen, and carbon dioxide-rich air is released out. This process is called breathing or pulmonary ventilation.
2. Diffusion of oxygen and carbon dioxide occurs at the alveolar membrane. 3. Gases are transported by the blood at the tissue
3.gases are transported by blood at tissue
level.
4. Diffusion of oxygen and carbon dioxide is at the tissue level.
5. Use of oxygen by the cells during the catabolic process results in the release of carbon dioxide.
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