On May 31, 1961, Meredith, with backing of the NAACP Legal Defense and Educational Fund, filed suit in the U.S. District Court for the Southern District of Mississippi, alleging that the university had rejected him only because of his race, as he had a highly successful record of military service and academic courses.
The answer is weathering. Weathering is where rocks or other materials are broken down because of forces like wind or water. This is different than erosion, which is the process where the broken down materials are moved.