According to the world health organization (who), is the third main cause of global deaths, and as of 2007, africa south of the sahara had 67 percent of the world's population living with the virus. a. hiv/aids b. ebola c. influenza d. rabies

How does rain water cause erosion and deposition? a. when acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves.b. when a river overflows it moves downhill resulting in the formation of caves.c. when it rains, water flows into rivers and streams and moves back to land, resulting in the formation of caves.d. when water empties into lakes, sediment is deposited, resulting in formation of caves.