Across
- 5. Things that pollute water.
- 8. Water that is safe for drinking.
Down
- 1. ___________ kills germs.
- 2. 3% of the entire Earth is ____.
- 3. Increased __________ leads to pollution of water.
- 4. Main source of water.
- 6. A waterborne disease transmitted by mosquitoes.
- 7. Water that collects in low-lying areas.