water resources

2. Weak/unfavourable position
3. The process of forcing water through a special membrane to remove very small particles
8. An area over which rainfalls and is collected
9. Process of making a product or service available
11. A supply of water
13. 1 of the measures to conserve water supply
15. Process of converting sea water into fresh water by removing salt from the sea water
16. Water shortage problem
17. A protected area of importance for wildlife, flora, fauna or features of geological or other special interest
19. A process of removing undesirable chemicals, materials, and biological contaminants from raw water
20. Ensuring that wastage is kept to a minimum

1. Arrangement between 2/more countries regrading the supply and use of water resources over a specific period of time
4. Is a process to change materials into new products to prevent waste of potentially useful materials
5. Process when water is boiled and the water vapour is collected and condensed into fresh water
6. 1 of the method of desalination
7. Cleaning of sea water
10. To revise the terms of (a contract) so as to limit or regain excess profits gained by the contractor
12. The knowledge,skills and tools that people use to meet their needs
14. Process of filtering water to remove larger sized particles and bacteria from the water
16. An outdoor water-use restriction is a ban or other lesser restrictions put into effect that restricts the outdoor use of water supplies
18. Is a natural or artificial lake, storage pond or impoundments from a dam which is used to store water