New equilibriums will form. Where it was once one climate, another will be, and the native crops that can no longer live in the first climate will be supplanted

New equilibriums will form. Where it was once one climate, another will be, and the native crops that can no longer live in the first climate will be supplanted by new ones that can survive in the new one. This won’t be the case everywhere, but this sort of adaptation will happen. You’re talking as if everything will remain static except the climate. Additionally, the entire worlds population at relatively sparse city density (say, Houston) can fit in like 1/3 of the United States. That isn’t to say that climate change isn’t a big deal. It is one of the biggest deals and quite grave. But you don’t really propose any solutions. What you allude to though won’t happen, that everyone works together to address the issues. My speculation is that if our technology doesn’t progress fast enough, billions will die, but if tech does happen to progress fast enough then that will be mitigated. That isn’t to say that the world couldn’t use a strong reduction in population. But given that we are causing this, I feel particularly bad for the wildlife whose habitats will be unlivable to them through no fault of their own and not through natural processes.