I can't rule out natural explanations for the CO2 rise and I can never do that even if I looked at every piece of available evidence with my own eyes (and trusted instruments). But the evidence I have looked at links the cement production (cooking limestone), fossil burning and deforestation to the rise in the atmosphere.
With the natural sources we would have to look for lots of new small ocean animals exhaling CO2, etc Volcanoes are underwater and not well estimated. But it would be a strange coincidence the volcanic activity happened to uptick with the industrial revolution. Not impossible, but improbable.
I’m sure you are aware of climatedepot (.org I think is the site)- they have tons of credible scientific papers, tests, research et- Marc Morano- the fella who runs the site used to work with Senator James Inhoffe who was the climate dude who gathered vast amounts of info showing climate change is not man’s fault- Morano’s site basically puts all the info and more in one site- Yes, some of it is inflammatory, however a great deal of it is provided by credible science and research- the stuff the current administration and ilk is keeping from the public
[[But the evidence I have looked at links the cement production (cooking limestone), fossil burning and deforestation to the rise in the atmosphere]]
You could just as well cite the rise in soda drinking in the south to the rise in CO2 In the atmosphere since CO2 began rising faster after the first soda fountaisn were invented
[[But it would be a strange coincidence the volcanic activity happened to uptick with the industrial revolution.]]
Well soemthign certainly upticked millions of years ago (if you believe in evolutionary timelines) to have caused 1500 ppm and later to have caused near 400 ppm