What is biogeography and what does it provide?

Biogeography- it is the geographic location and distribution of living organisms.
It provide evolution in many ways because organisms are not distributed evenly throughout the world, but related organisms are found in the same isolated parts of the world and this is not explained by climate.

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.