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19 July, 21:58

Why do we need oxygen?

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Answers (2)
  1. 19 July, 23:06
    0
    We breathe because oxygen is needed to burn the fuel sugars and fatty acids in our cells to produce energy. Oxygen is brought into the lungs via breathing, where it is transported by red blood cells to the entire body to be used to produce energy.
  2. 19 July, 23:42
    0
    because we use that to live
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