Question

an underground layer of rock, sand, or other material through which groundwater flows

Answer 1

Answer:

underground layer of rock, sand, or other material through which groundwater flows is called an aquifer.

Explanation:

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Answer 2

Answer:

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.