Across
- 1. save water for future use
- 3. natural sources of freshwater
- 7. process of water circulation
- 8. small drop of water
- 9. use water again for another purpose
Down
- 2. large storage of water
- 3. water collected from rain
- 4. structure that carries water
- 5. device that reduces water flow
- 6. chemical symbol for water