water resources

2. in order to control the rising demand for water, countries will increase the_____ of water
3. nature reserves such as forest and rivers are often used as catchment areas as they can retain fresh water
7. if we do not manage our water supply well,this would increase our________ and put us in an unfavourable position
9. one way to discourage excessive use of water is to input water conservation____
10. up to three quater of the earth fresh water supply is used to grow crops. this process is called_______
12. the process of removing salt from sea water is known as______
13. with the used of modern_______,people could increase the supplu of water.
14. one method of desalination is also known as ________
15. the_______ of using huge amount of water might be dire as one day there might be no fresh water for us to use
19. ______ water from another country is also another convenient way of obtaining fresh water
21. ______ osmosis is the process where sea water is pumped at high preasure to seperate salts from water

1. an international_______ is an arrangement between countries to negotiate the sharing of water resources
4. as a country becomes more developed, people adopt to mordern and better_______
5. to ensure that there is enough eater to meet the rising demand is through water________
6. uneven_________ of fresh water might cause some countries to have limited supply of water if the population is much bigger
8. sinagpore has been able to tackle the______ limited supply of fresh water
11. the problem of water shortage is also known as water_______
16. water are used up in huge amount. thus, water is a ______ resource
17. ________ area is where rain falls and it is collected
18. this process where the supply of water is cut off to spread awareness about water conservation
20. fresh water are increasingly polluted by human activities. this causes _____ pollution