Answers

2015-11-27T00:05:57+05:30

An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt) from which groundwater can be extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology.

sentence:After seven years of drought and unexpected sharp falls in the local aquifer.

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