what percentage is oxygen in the air – Organs Zone

Question: what percentage is oxygen in the air
- Keywords:
  air,
  breathe,
  oxygen
Asked by to Del, Catherine, John on 20 Mar 2014. This question was also asked by .
- Adelle Thrower answered on 20 Mar 2014:
  
  about 17%, 80% is nitrogen and 3% is carbon dioxide and other gases

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