>Oxygen First Aid Quiz
Question 1 of 12
>The atmospheric air we inhale contains ____ % oxygen.
A. 12
B. 16
C. 21
D. 27
Safety 101
>Beware the Mooring Lines
>Acclimatization
>Rescue of an Unconscious Diver
>Temporomandibular Joint Dysfunction in Diving
>Preventing Breathing-Gas Contamination
>Survive Your Dive
ADVERTISEMENT
::
Language:
Spanish
Portuguese
HOME
Features
DAN Mission
Dive Slate
Imaging
Encounters
Local Diving
Water Planet
Dive Medical Centers
Gear
QUIZZES