railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) General Knowledge Indian Geography Indian Economic and Human Geography
Which of the following are methods for land conservation?
1. Relying more on irrigation rather than rainfed water.
2. Land reclamation
3. Regulated use of chemical fertilizers
4. Checks on overgrazing
Select the correct answer using the code given below.
1
1, 2 and 3 only
2
2, 3 and 4 only
3
3 and 4 only
4
1, 2, 3 and 4