Question

question 16 of 20 : select the best answer for the question. 16. which process causes wells on land to become saline, making them unusable for drinking water? a. eutrophication b. echo sounding c. groundwater infiltration d. erosion

Explanation:

• Option A: Eutrophication is about nutrient enrichment in water bodies (like lakes) causing algal blooms, not saline wells.
• Option B: Echo sounding is for measuring water depth, irrelevant to well salinity.
• Option C: Groundwater infiltration can bring salt - laden water (e.g., from coastal areas or salt - containing geological layers) into wells, increasing salinity.
• Option D: Erosion is the wearing away of land, not directly causing well salinity.

Answer:

C. Groundwater infiltration