From the graphs earlier, it is more likely is that the human activity is promoting an un-precedented period of stable temperatures, keeping us from the extreme decline usually seen when the world gets this warm.
CO2 follows warming in these charts, so it isn't a cause. You can't even show that the CO2 rise is due to some burning or oxidation process, or simply a release of C02 trapped in the ocean as the water warms.
See post 40.