Is breathing pure oxygen safe?

Related questions

1. How much is a oxygen bar?
2. What are the benefits of oxygen therapy?
3. How does oxygen bar work?
4. Can you live off pure oxygen?
5. How long does boost oxygen last?
6. Does boost oxygen help with hangovers?
7. Do oxygen bars help hangovers?
8. Are oxygen bars profitable?
9. What is the normal oxygen level for someone with COPD?
10. Does oxygen make you high?

Tags

1. #ability
2. #capture
3. #blood
4. #called
5. #deadly
6. #normal
7. #safely
8. #molecule
9. #concentration
10. #haemoglobin
11. #overwhelms
12. #evolved
13. #breathe
14. #higher
15. #carry
16. #lungs
17. #oxygen
18. #transport