What is an aquifer?
1 Answer
Layers of sandstone, gravel, sand, or cracked limestone.
Explanation:
An aquifer is a layer of rock that is permeable and has water. Aquifers can be found at various depths and can be made up of sand, limestone, and other rocks. How much water moves through an aquifer depends on permeable the material is.
You can learn more about aquifers from the USGS here.
