OT: Carbon Dioxide races -> known vs unknown -> terraforming mars -> is or is not

[Thermodyne]

CO2 breathers could be carbon cycle just like us. But evolving in a atmosphere with a high concentration of CO2 would have given them the ability to break the CO2 down into CO an O, and then use the oxygen and turn it back into CO or CO2 blowing off the excess carbon in the process. There is some evidence that long term heavy smokers do some of this on a small inefficient scale. Pulling off one of the oxygen molecules and polluting their blood with the CO, which takes a long time to blow off.

[ July 15, 2003, 16:54: Message edited by: Thermodyne ]