â Companies like K Mart and Wal Mart offer an option agreement for warranties on their products, within a two year span of time after purchasing.
Erosion. 1  Rainfall-Rainfall can cause erosion both when the rain hits the surface of the Earth, called splash erosion, and when raindrops accumulate and flow like small streams. 2  Rivers-Rivers can create a significant amount of erosion over time. 3  They break up particles along the river bottom and carry them downstream.
Water running down all the mountains and valleys is pulled down by this force of gravity. Wind is ultimately a result of air molecules being held to the Earth's surface due to gravity. Water, wind, and ice, working under the influence of gravity, are the greatest sources of erosion on the Earth's surface. The effects of gravity, combined with wind, water, and ice, create many types of geologic features.