15. In India, the problem of soil erosion is associated with which of the following? 
1. Terrace cultivation

2. Deforestation
3. Tropical climate
 

Select the correct answer using the code given below.

1. 1 and 2 only

2. 2 only

3. 1 and 3 only

4. 1, 2 and 3

Correct Answer :

2 only