2. We use a ____________ to draw underground water.

3. Boiling kills the __________ in the water.

4. We should always drink dirty water.

5. We should _____ water.

6. All living things need ___________ to live.

7. Seawater is __________.

8. __________ is the main source of water on Earth.

9. _________ is the use of water.

10. Water from the mountains comes down in the form of ______________.