Whats a Cheap and Easy way to make CO2??

[Scarlet Sky]

u know what thats actually a pretty good question i never reeally thought about, if our green house gas is co2 then h0ow the hell does it get up there?

a lot of people (including new channels) confuse co2 with co.
carbon dioxide=what you breath out, what plants like.
carbon monoxide= poison, green house gas, car exhaust, global warming