How are atmospheric percentages made in game

[AnthropocenianAge (𝒜𝓇𝓉𝒽𝓇𝑜𝓅𝓁𝑒𝓊𝓇𝒶 𝓌𝒶𝓃𝓉𝓈 𝓉𝑜 𝑔𝒾𝓋𝑒 𝓎𝑜𝓊 𝒶 𝒽𝓊𝑔!)]

Also, CO2 levels do not change with Fermentation from Hydrogenases in game.

@hhyyrylainen

It would create a big unbalanced CO2 producer in the game (photosynthesis is balanced by respiration). There would need to be some other factor that would balance the CO2 generated from all the hydrogenase or otherwise all the game worlds would be like 95% CO2. So that’s why it wasn’t added because it would ruin the dynamic gas simulation.