On any turn that an AC has been in existence for more turns than it's Ability 1 value, the atmosphere gets converted to that breathed by the largest population group. 100 hydrogen, 80 oxygen, 80 carbon dioxide results in a conVersion to Hydrogen. If the population is even (100 hydrogen and 100 oxygen), the atmosphere is not converted. AC will convert the atmosphere over and over again each turn if you fiddle with the pop levels.
[ June 17, 2003, 22:08: Message edited by: Imperator Fyron ]