Water Resources

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Across
  1. 1. keeping wastage to a minimum
  2. 6. an arrangement between countries regarding water resources
  3. 10. removing salt from sea water to become fresh water
Down
  1. 1. an area which rain is collected
  2. 2. condense collected water vapour into fresh water during desalination
  3. 3. being in a unfavorable position
  4. 4. shortage of water to meet the needs of people
  5. 5. a process of filtering large sized particles from water
  6. 7. treating used water with the use of advanced technology to produce fresh water
  7. 8. knowledge and skills that is used to meet people's needs
  8. 9. molecules passing through a permeable membrane