Indian Geography
Which among the following steps are useful to prevent soil erosion?1. Afforestation2. Contour Ploughing3. Prohibition of shifting cultivation4. Flood controlChoose the correct option from the codes given below :

2 & 4
1, 2, 3 & 4
1 & 2
1, 2 & 4

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Indian Geography
Which of the following statements is not correct about the tank irrigation in peninsular India?

Percolation of rainwater is less due to hard rock
Rainwater can be easily stored by constructing tanks
Most of the rivers are seasonal and dry up in summer reason
Underground water level is higher

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