what is respiration?
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- respiration is the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction.
- Three types of respiration include internal, external, and cellular respiration.
- External respiration is the breathing process. It involves inhalation and exhalation of gases.
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a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances.
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