Question

3. Ground subsidence occurs due to
(a) withdrawal of more
ground water than its recharge

(b) more recharge of groundwater than its withdrawal
(c) equal rates of recharge and withdrawal
(d) None of the above​

Answer 1

Answer:

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Explanation:

Land subsidence generally occurs when groundwater is mined in an unplanned way. ... Lowering of the pore water pressure in a layer results in an increase of the effective stress in the soil, resulting in consolidation of the soil which manifests as land subsidence.