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So because human industrial growth happened in the last 200 years and CO2 increase happened in the last 200 years our industrial growth is the result of CO2 increase? That would be valid in that website's logic.
Just because they are linked doesn't mean CO2 is a result of heat, heat is the result of CO2. Also, If I were you I wouldn't trust a website called skeptical science. It seems to me their goal is to find modern science theories and provide an alternate hypothesis that has little or no claims backing it up.
Both can be correct, saidly for us. CO2 can go up first like going on now or heating can precipitate CO2 going up. Increasing temperatures resulting from increasing CO2 can change what is going on in soil, permafrost and in lake sediments causing increased release of CO2 and methane deposits compounding human induced changes.
Past non-human inducers of temperature change could be caused by solar activity, tilt of earths axis and less than circular orbit around sun, and changes in oceanic circulation caused by continental drift and rising and lowering of crust induced my what is going on in mantle. Left out meteour striking buried carbon deposits or extreme volcanic activity that could also liberate carbon deposits.
While that may be true, none of those events could produce the same data we have today.