I believe the plates are called the south American plates just saying I might be correct or I might be wrong so don't take my word for it I am not the expert
It causes for the world climate to rise causing global warming. Also erosion causes be buildings to be eaten away from water or acid rain and can destroy homes and possible hurt humans. Deposition runs into the water and streams with eventually goes to the water lines to the food and drinks we consume today.
I think it could be mountains.. if I'm wrong then I'm sorry..
A hydro source good luck!!!