Water

4. a colorless, odorless, transparent, tasteless liquid.
5. the degree of excellence of something.
9. living solely or chiefly in or on the water.
10. a substance that provides nourishment essential for growth and maintenance of life.
11. water that seeps through the soil or rocks.
15. a river, canal or other route for travel.
16. a heavy silvery-white metal that is liquid at ordinary temperature.
17. a microorganism that causes diseases such as bacterium, virus or fungus.
18. careful examination.

1. a prolonged period of abnormally low rainfall leading to shortage of water.
2. shaft into the ground to obtain water, oil and gas.
3. a small narrow river.
6. an official announcement, typically a warning.
7. a process by which water becomes dirty as a result of fine mineral particles in the water.
8. a natural body of water emptying into oceans, lakes etc.
12. liquid that has been adversely affected by anthropogenic influence.
13. moisture condensed from the atmosphere that falls visibly in separate drops.
14. microorganisms made up of a single cell that has no distinct nucleus.