On Sat, 23 Oct 2004 15:52:55 +0100, The Natural Philosopher wrote:

Frankly, I can't see what you were driving at...If life is
endangered, its insupportable?

'Tis a bit of mouthful but as O2 levels drop you will become
unconcious but if returned to normal O2 levels you'll recover. Your
life has been "endangered". If the O2 level continued to drop there
would become a point where you would die because there is not enough
O2 to support (your) life.

--
Cheers
Dave. pam is missing e-mail