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Respiration and circulation
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    Respiration and circulation

  • Respiration and circulation are vital physiological processes in multicellular organisms. Respiration involves the exchange of gases, mainly oxygen and carbon dioxide, between an organism and its environment. In humans, this process occurs in the respiratory system, where oxygen is taken in through inhalation and carbon dioxide is expelled through exhalation. Circulation, on the other hand, involves the transportation of gases, nutrients, hormones, and waste products throughout the body. In huma...
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