Originally Posted by
hoss183
Any by the way just to be pedantic, there is as much oxygen at altitude as at sea level, its still 20.9%, what is different is the way the body absorbs it due to the partial pressure of the gas.
there is as much oxygen at altitude as at sea level,
No there isn't.
Maybe it's a case of terminology but as understand it the partial pressure of oxygen (measured as a percentage) is the same at altitude as at sea level, but the actual amount of oxygen (as in molecules per unit volume/breath taken) is less at altitude.......