Well this is basically how I would explain this to him
There is really no reason to be worried this isn't a good thing but it ie also not a bad thing either basically the earths atmosphere is changing and the titonic plates are moving so the earths crust will recreate new states and make more islands like hawaii
i hope this is the answer you are looking for.
All 3 sciences, geology, criminology and psychology in human geography, oceanography (if thats a thing), vulcanology
Plants and trees absorb the carbon and make oxygen with it.