[Moonman62]

I don't understand the problem. CO2 is all natural, and all we're doing is returning CO2 to the atmosphere that was taken out in the past. Plus, plants love it.

[expatpat]

1. Water vapor has a much greater greenhouse effect than CO2, so that CO2 is quite a bit smaller contributor.

2. Most of the production of CO2 is from natural sources, man-made CO2 is less than 10%.

You are right regarding the balance, except for the fact that we are digging up carbon from the ground where it was probably produced from CO2 gas many centuries earlier (but see above).