“But car emissions are actually not part of the closed cycle.”
They certainly are part of the cycle, although not a natural part obviously.
The CO2 from auto emissions comes from hydrocarbons in petroleum, and those hydrocarbons were trapped from the atmosphere by plant life. When we burn the petroleum, the carbon goes back to the atmosphere.
It make take many years for that cycle to close, but it’s still a cycle.
Well, of course you are right if you take the time for plant decay to become oil deposits. We are in agreement.
Its just that the plant cycle is a one year cycle, and we should be able to burn wood to heat our cabins and camps.
BTW, I do not believe that CO2 is going to change the climate either. The concentration in the past has been higher and CO2 is plant food.
Do I support renewable energy? Yes, if a company can make a profit with it — without the govt subsidies. So I support Nuclear power first and solar and wind as intermittent sources.