Chapter 8

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Across
  1. 4. A process by which water is being polluted
  2. 6. An arrangement between countries regarding the supply and use of water
  3. 7. It increases to control the rising demand for water. Something to do with money.
  4. 8. A process by which pressure is applied to the water through a special menbrane to remove very small particles
  5. 10. A process by which waer is recycled
  6. 11. Makes up 93% of the earth water
  7. 12. A problem of availability of fresh water
  8. 17. A process by which salt is removed from seawater
  9. 19. Makes up 3% of the earth water
  10. 20. It increases to control the rising demand for water. Starts with W
Down
  1. 1. Contributes to the rise in water consumtion. Starts with P
  2. 2. The pillar of PUB's education efforts for Singapore
  3. 3. Often used as catchment areas
  4. 5. It refers to the careful use of water resource to reduce wastage
  5. 9. One of the largest water consumer in the world
  6. 13. An area over which rain is collected
  7. 14. Contributes to the rise in water consumtion. Start with A
  8. 15. Used to create new sources of water.
  9. 16. Contributes to the rise in water consumtion. Starts with I
  10. 18. Contributes to the rise in water consumtion.Starts with L