On 23 Oct 2003 07:24:20 -0700, Steve Christensen
wrote:
snip
Does
anyone even know whether depriving them of oxygen (with CO, CO2, N2, whatever)
will kill them? I bet it's damn hard to do.

I think the lethal mechanism of CO2 is not oxygen displacement, it's
CO2 concentration, and partial pressure across a membrane, acidosis,
and whatever. For example, an atmosphere of 90% oxygen and 10% CO2
would still be lethal.....not the lack of oxygen, but the lethal
concentration of CO2.

.....but I might be talking out my bottom.