3 points:
#1. It's China
Digression: In Canada, we have a psycho Govt taxing the hell out of everything to save the planet. If Canada was disintegrated it would only eliminate 1.7% of the earth's emissions.
#2 It's Water:
#3 It's Natural
Digression: Non-Religions use dinosaur fossil evidence to dispute religious records that is counter-argued by fanatics, however the Non-Religious using the argument often deny science by thinking a green car, or buy local can stop the Earth and Solar system's cycles that build, change, and destroy planets. I wonder if our ancestors could have prevented the build up of 3km of Ice over North America jut 20,000 years ago? I wonder why now we are trying to stop it from its melting for the last 20,000 years?
Our emissions are not good but they are not the driver. Temp cycles have been mapped for nearly 1M years and it gets hot and cold. Notice the steep transition from cold to hot.
#Bonus: It's not CO2 it is N20 and farming: https://theconversation.com/meet-n2o-the-greenhouse-gas-300-times-worse-than-co2-35204