Across
- 6. a lined canal
- 8. water is pumped from a groundwater or surface water source into unlined ditches and flows by gravity to crops
- 9. any water that contains sewage and other wastes from homes and industries
- 10. the top of the groundwater zone
- 11. any change in water quality that can harm living organisms or make water unfit for human uses such as drinking, irrigation, and recreation.
- 12. used water from showers, sinks, dishwashers, and clothes washers
- 13. a rough measure of the volume of fresh water you use directly and indirectly to support your lifestyle
Down
- 1. the process of removing dissolved salt from ocean water or from brackish (slightly salty) water in aquifers or lakes
- 2. fresh water that is used to produce food and other products
- 3. using pipes or tubes to deliver water directly to plant roots
- 4. spaces that are completely filled with fresh water
- 5. when land above an aquifer sinks
- 7. the natural nutrient enrichment of a shallow lake, a coastal area at the mouth of a river, or a slow-moving stream