In what areas of the world is malaria found? what type of climate do the parasites that cause malaria live in? if global temperatures increase, do you think malaria might spread to other areas?

Malaria occurs in over 100 countries and territories so it's in possible to list all but some of the areas that malaria is MOST commonly found is South America, the Caribbean, southeast asia, and the middle east. Second they occur mostly around the temperatures of warm and tropical parts were also in the rainforests were mosquitoes can breed in the water. Third, i would say yes. :)

I'm pretty sure it's c. extremely gradual but not 100% sure though.