Correct answer: Erosion
The process by which, sediment is removed from its source is called an erosion. It takes place when the soil in an area is loosened enough so that it can be transported by the wind.
It is the process that is responsible for the desertification of the deforested area.
Water also plays a major role in the erosion, rain washes away the sediment and the water from the river transport the sediment caused erosion of the soil.
