Yes, fossil fuels are originally from organic life, which resulted directly or indirectly from photosynthesis. Plants do their best to suck up all the CO2 in t

Yes, fossil fuels are originally from organic life, which resulted directly or indirectly from photosynthesis. Plants do their best to suck up all the CO2 in the atmosphere. Yet CO2 is being added to the atmosphere faster than photosynthesis can capture it. This is why CO2 levels are rising. Human activity contributes a lot to the addition of CO2 (and equivalent greenhouse gases) and plants can't keep up with us.