How will global warming get wors?

Global warming will get worse if we, firstly, increase in pollution and secondly, the increase in deforestation. Trees take in oxygen and give out carbon dioxide (CO2). When they get destroyed, there is nothing to take in oxygen, but it keeps releasing CO2 which enhances the grennhouse effect and thereafter causes global warming. I am sure there are many other things which may cause global warming, but theses two are the only ones I am able to think of.

Sorry for any inconvenience.