water resource

5. puts us in a weak or unfavorable position.
7. a process of converting sea water into fresh water.
8. it refers to the careful use of resource.
9. _____ collection ponds have been built in some housing estates.
10. ____ water is produced when impurities are removed.
15. an agreement between two or more countries regarding the supply of water.
19. water stored in rivers,streams and lake is called ____water.

1. an area over which rain falls and is collected.
2. while some countries have a abundant supply of fresh water, others suffer from a lack of it.
3. fresh water found deep underground is know as _______
4. water from local catchment areas are collected in ______.
6. a process of water filtration.
8. by this method, chemicals are dispersed into the air to allow water droplets to form more easily
11. water______ is a method used in Singapore to increase supply of fresh water.
12. _______ are often used as catchment areas because forests can retain a supply of fresh water.
13. water_____ occurs when there is a shortage of water.
14. a exercise which the supply of water in some homes is temporarily cut off.
16. cleaner than used water and does not contain salt.
17. it refers to skills that people use to meet their needs.
18. filtering water to remove larger sized particles.