Across
- 2. careful use of resources to ensure that wasteage is kept to a minimum
- 6. Rising population
- 9. being in a weak or unfavorable position
- 10. process of converting sea water into fresh water
- 12. Manage water supply well
- 14. increased demand for limited supply of water
- 16. method that Singapore uses to increase the supply of fresh water
- 17. an area which rain falls and is collected
- 20. occurs when there is a shortage of water to meet the needs of people
Down
- 1. knowledge, skills and tools that people use to meet their needs
- 3. Increasing need to grow food
- 4. process of water filtration used in desalination where water is boiled and the water vapour is collected and condensed into fresh water
- 5. supply of water
- 7. buying water from neighboring countries
- 8. Making changes in life for water resource
- 11. arrangement between two or more countries regarding the supply and use of water resources
- 13. produced when impurities are removed from waste water through a treatment process
- 15. process of filtering water to remove larger sized particles and bacteria from water
- 18. process of forcing water through a special membrane to remove very small particles
- 19. water resources polluted by human activities