That is a lie. See
https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_TS.pdf
That is also a lie. The evidence contains enormous amount of empirical data.
So what? None of that biosphere were homo sapiens and those conditions took hundreds of thousands to millions of years to develop.
The oceans have absorbed enormous amounts of the CO2 we have put into the atmosphere. That is why the oceans are becoming acidified. But the levels IN THE ATMOSPHERE have risen by 50% since the Industrial Revolution and the effect of that increase, calculable from first principles, is the observed warming. More CO2 will cause more warming. And increasing temperatures increase the level of water vapor in the atmosphere creating a positive feedback.
What concentration? What theory? And what actual scientist says such a thing? Every statement you've made here has the stink of anal derivation.
The chemistry of the atmosphere is not discerned with models but by run-of-the-mill chemistry. It is well understood. You act as if there is some factor in atmospheric chemistry that precludes the greenhouse effect. Of course you fail to identify it in any way.
Face it. You have done nothing here but make completely unsubstantiated assertions with NO BASIS IN SCIENCE WHATSOEVER.
Sorry, but it does, you fool.
Everything you (or I or anyone else on this planet) do that puts more CO2 into the atmosphere contributes to global warming.
I drive a 2021 Toyota Sienna Hybrid. The CO2 it puts out contributes to global warming.