Respuesta :
Answer:
Groundwater infiltration.
Explanation:
Groundwater infiltration is the process which can cause water and aquifers to become brackish and unusable for agriculture.
Answer: Groundwater infiltration
Explanation: Because Groundwater infiltration is the process which can cause water and aquifers to become brackish and unusable for agriculture. Groundwater infiltration is the process which can cause water and aquifers to become brackish and unusable for agriculture