Make the puzzle of the circulatory system, The lungs and the respiratory system allow us to breathe. They allow oxygen to enter our bodies (inspiration or inhalation) and expel carbon dioxide (expiration or exhalation). This exchange of oxygen and carbon dioxide is called "respiration."
Make the puzzle of the circulatory system, The lungs and the respiratory system allow us to breathe. They allow oxygen to enter our bodies (inspiration or inhalation) and expel carbon dioxide (expiration or exhalation). This exchange of oxygen and carbon dioxide is called "respiration."
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