Answer:
"Frequent pumping of water" from the underground causes groundwater to get depleted.
Step-by-step explanation:
- Groundwater problem is mainly due to human activities like continuous pumping of water from the ground without giving time for it to replenish.
- This causes dryness in the wells and also results in the "movement of saline water" into fresh water acquirers
- Afforestation, smart usage of water, recycling water, reducing chemical wastes can help in subsiding the groundwater problem.