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It is an underground layer of water-bearing permeable rock
or unconsolidated materials.​


Sagot :

Answer:

Aquifer

Explanation:

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