An aquifer is an underground layer of rock, sand, or gravel that holds water and allows it to flow, supplying wells and springs.
From Latin "aqua" meaning "water" and "-fer" from "ferre" meaning "to carry." It literally means "water carrier."
Aquifers are like hidden underground rivers and sponges that quietly keep cities and farms alive. You might drink from an aquifer every day without ever seeing it or knowing its name.
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