Which of the following is/are the possible consequence/s of heavy sand mining in riverbeds ? 1. Decreased salinity in the river 2. Pollution of groundwater 3. Lowering of the water-table Select the correct answer using the code given below :
a
1 only
b
2 and 3 only
c
1 and 3 only
d
1, 2 and 3
Environmental DegradationImpacts of Sand MiningSand miningRiverbedsGroundwater pollutionWater-tableSalinity