Question

What process can cause water in aquifers to become brackish and unusable for agriculture?

A) volcanic activity

B) eutrophication

C) erosion

D) groundwater infiltration

Answer 1

Answer: Groundwater Infiltration

Step-by-step explanation:

Groundwater infiltration cause seawater to flow into dried-out aquifers that were used for drinking water. This makes these aquifers unusable for agriculture.

Answer 2

groundwater infiltration, D