The term gradual wearing away can be summed up in one word: EROSION. EROSION is the process of the gradual wearing away of land or soil due to natural forces such as wind, water, and ice. It is a natural process that has been occurring since the beginning of time and is an important part of the Earth's cycle of renewal. EROSION can cause significant damage to land, buildings, and other structures, and can also lead to the loss of valuable topsoil.