Soil and Its Conservation

Q.

What happens when it rains on the soil without a vegetational cover?

1. percolates in soil efficiently.

2. causes loss of surface soil.

3. leads to fertility of the soil.

4. does not cause any change in soil.

Q.

Soil erosion can be prevented by:

1. Raising forests

2. Deforestation

3. Excessive use of fertilizer

4. Overgrazing by animals