Why do so many climates exist in north and south america

Because of the vast types of terrains like the wind and ocean currents.

Explanation:Terrain or relief (also topographical relief) involves the vertical and horizontal dimensions of land surface. ... The Latin word terra (the root of terrain) means "earth." In physical geography, terrain is the lay of the land. This is usually expressed in terms of the elevation, slope, and orientation of terrain features.

windward