Also higher carbon and heat seem to cause the ice caps and the glaciers to melt down faster than plants can absorb the excess heat. You could also say that it’s a regulator but I’m not sure it’s good the humanity in any way.
And more and warmer oceans provide more space for plankton to eat carbon. Nature almost always a regulatory process at the ready. The question is only its capacity.
Sure life will adapt or change or not. But I am not sure we will. We have now reached the point where we can stop using fossil fuels and dumping carbon into the atmosphere.