Answer:
Mass wasting
Step-by-step explanation:
Mass wasting is defined as the downward flow of earth materials such as soils, rocks under the influence of gravity. It involves both the weathering and erosion process. The erosion caused by the downward moving ice is an example of mass wasting process. In simple words, it is also known as the glacial erosion. The glaciers while moving downward, plucks the materials that undergoes weathering and these materials are further carried downward along a slope due to influence of gravity. This forms a valley as it flows downward and the eroded materials are deposits at the base of those mountain slopes.