Across
- 2. An accumulation of ice, snow, and/or sediment
- 4. Removing harmful chemicals or germs from a product to make it safe to consume
- 5. A technique used to clean water using microorganisms
- 6. A body of underground rock/sediment that holds groundwater
- 10. The place/layer underground below the soil
- 11. The artificial method of watering land to make it suitable for agriculture
Down
- 1. The process of removing salt from water to make it safe to drink
- 3. A change in a climate's normal temperature
- 7. A chemical used to keep water clean (often found at the pool)
- 8. Large and heavy regions of compressed snow
- 9. A tank that holds waste underground