State D.
Planting trees helps in checking of soil erosion.
2. Land use has not changed over the period of time.
3. Landslide does not affect the road and rail communication.
To conserve the land, we need to regulate the use of chemical pesticides.
5. Soil formation is not affected by organic material. (F)
6. Soil can be formed within a few years.
7. Subsoil consists of unweathered rocks.
8. Alluvial soil is found in deserts.