Across
- 4. sun heats up water in rivers and turns it into vapour
- 5. water has condensed as the air cannot hold it anymore
- 6. replenishes fresh water on Earth
- 8. is the process of removing dissolved salt from ocean water
- 9. aqueducts (lined canals)
Down
- 1. the top of the groundwater zone
- 2. water quality changes that harm living organisms or make water unfit for drinking/ irrigation/recreation
- 3. another name for the water cycle
- 7. a large natural or artificial lake used as a source of water supply
- 9. a body of permeable rock which can contain or transmit groundwater.