Across
- 4. water shortage problem
- 7. an area over which rain falls and is collected
- 8. process of filtering water to remove larger sized particles and bacteria from the water
Down
- 1. ensuring that wastage is kept to a minimum
- 2. weak or unfavourable position
- 3. arrangement between 2 or more countries regrading the supply and use of water resources over a specific period of time
- 5. process of converting sea water into fresh water by removing salt from the sea water
- 6. the knowledge,skills and tools that people use to meet their needs