Um..We are not adding carbon either. We may be taking carbon that is already in the environment and putting it into another form when we burn carbon containing fuels, but then all those hydrocarbons were once living and therefore once came from carbon dioxide aspirated by a plant. Unless we find a way to mine the moon or Mars, we can’t add anything to the environment here on earth. We got a well stocked planet.
I disagree. We are taking carbon that was sequestered from the atmosphere and the biosphere for millions of years and we are putting it back into the atmosphere.
Since 1750, this input from man, along with possibly other unknown factors, has resulted in atmospheric carbon dioxide going from 280 ppm to 380 ppm.
Is this a problem? Scientifically speaking, we don’t know yet.
Is there some level at which the greenhouse effect associated with human-introduced carbon would become a huge problem? Absolutely. 1000 or 2000 ppm might be such a level, and besides would begin to have direct human health effects. Below those levels we just don’t know at present how the roughly 25% increase since 1750 will affect the weather.
That such an increase has occurred is not really open to debate. What the increase means for today and tomorrow is not known at present, despite what the warmists claim.