is it y=f(x) or y=x(f)? aka is is warmer because of the higher greenhouse gases or is there more greenhouse gases because of the warmer climate (that could have been caused by things like leaving an ice age and approaching a warm period in Earth's life)
Just to clarify, i support green technology and I think this is definitely the way to go but I don't like the unjustified crusade using proofs that can be ripped apart in minutes.
Many commenters above are speaking about how hard it is to eject someone out of a bias, but I don't know why they're doing this. They're lamenting the inefficacy of logic to convince people while not applying it in this very case. The graph just shows a correlation.
http://www.epa.gov/climatechange/ghgemissions/sources.html
Obviously you are missing out on natural sources for CO2, and the rest of the gases as well:
Water vapor (H2O)
Carbon dioxide (CO2)
Methane (CH4)
Nitrous oxide (N2O)
Ozone (O3)
Chlorofluorocarbons (CFCs)