This is a loaded question ( https://en.wikipedia.org/wiki/Loaded_question ), since it implies that this question-asking is honest and straightforward.
On the contrary, it seems like OP is "jaqing off" ( https://rationalwiki.org/wiki/Just_asking_questions ); unless, of course, they can absolutely prove 100% that they're acting in good faith.
In contrast, OP's hunch about the climate emergency either not existing because the concentration of anthropogenic CO2 in the atmosphere is "small" (according to some unspecified criteria), and/or fixing itself due to plant growth, run counter to the consensus position of the world scientific community, and hence the burden of proof is on OP https://en.wikipedia.org/wiki/Burden_of_proof_(philosophy)
It was their choice to raise that burden to the unachievable height of '100% absolute proof' :)