Available Answers

1. 1.

   Complete the following sentences by using suitable words:

   1. Soil is an important ________.
   2. Soil erosion reduces the _____ of the soil.
   3. Manures contain both ______ and _____.
   4. Planting of trees is known as _____.
   5. Pesticides ______ the fertility of the soil. 
2. 2.

   Some statements are given below. Tick mark the correct ones and put a mark against the incorrect statements:

   1. Soil is a natural resource.
   2. Strip-cropping helps in soil erosion.
   3. Manures are prepared in big industries. 
   4. Pesticides are useful for the soil.
   5. Plants should be cut to make cities.
   6. Plants act as soil binders.
   7. By crop rotation we can maintain the fertility of the soil. 
3. 3.

   How is a manure different from a fertilizer?

4. 4.

   Define Silting.

5. 5.

   Define Soil erosion. 

6. 6.

   Define Afforestation.