The lungs and respiratory system allow us to breath. They bring oxygen into our body ( called inspiration or inhalation ) and send cabon dioxide out ( called expiration or inhalation ). This exchange of oxygen and carbon dioxide is called respiration.
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Answer:
The lungs and respiratory system allow us to breath. They bring oxygen into our body ( called inspiration or inhalation ) and send cabon dioxide out ( called expiration or inhalation ). This exchange of oxygen and carbon dioxide is called respiration.