Q. In the passage given below, one word has been omitted, Write the word along with  that comes before and the word that comes after.

1. Trees prevent the surface soil the 
2. earth from being washed away shower. 
3. Our earth has a covering Of fine soil on the 
4. surface. Under soil lie rocks of 
5. various kinds. The surface soil supports the 
6. life plants, which in turn, supply food 
7. animals need. The shower washes the 
8. soil more quickly anything. This cannot 
9. happen in places where there plenty of 
10. trees. Trees stop the flow of water, and 
11. the soil is held together their roots which 
12. keep the soil intact- The soil of forests absorbs 
13. water soon and the soil erosion.