Bhangar Khadar (1) It belongs to Old alluvium. It belongs to New alluvium. (2) It is less fertile It is more fertile (3) It is non porous, claying and loamy. It is calcareous clay. (4) It is found in the lower areas of valley bottom. They are found 30 m above flood level of the rivers Sheet erosion Wind erosion (1) It mainly occurs on hill slopes. (1) It occurs in desert areas. (2) Agent of denudation is running water (2) Agent of denudation is wind.