quote:
Originally posted by Uschi:
Fact: People pass out because of excess CO2 way before they would pass out because of lack of oxygen.

true enough (This is an odd place to be debating this) But your fact wasn't that excess CO2 would kill you before lack of O2 you stated the primary function of repiration was exhaling CO2 and not inhaling O2. All I'm saying if you don't do both of these your fucked so one does not have priority over the other they are both important is all.