I just Binged ,Atmosphere of Earth and Carbon dioxide only 0.0397 % ,it’s almost nothing
It’s about 1 four-hundredth as prevalent as the number one green house gas.
Water vapor.
Clouds cause more warming (and cooling) than any other gas. It is the most obvious problem with the carbon crowd. Everyone can see the clouds, understand that predicting weather with water involved is still voodoo, and any warming/cooling predictions without using being able to predict water’s influence is silly “science”.
DK