Across
- 2. Safe, clean water that is suitable for humans to drink.
- 6. Farming activities that use large amounts of freshwater for crops and livestock.
- 7. An early civilization in Mesopotamia known for developing irrigation to grow crops year-round.
Down
- 1. A measure of the total freshwater used by a person, country, or industry.
- 3. A major groundwater system in the United States used heavily for irrigation.
- 4. Underground layer of rock or soil that stores groundwater.
- 5. Water hidden in the production of food or products, not directly seen by consumers.