Question

the image shows a cross section of a landscape and a well. which of the layers shown is an aquifer? 1 2 3 4

Explanation:

An aquifer is a subsurface layer of permeable rock/soil that holds and transmits groundwater. The well draws water from layer 3, which is the blue, water-filled permeable layer shown.

Answer:

1. Layer 3 (the blue water-bearing layer)