Across
- 2. ___ falls from the cloud.
- 5. Rainwater sometimes ___ into the Earth.
- 6. Dirty water cane be __ for plants and animals.
- 7. We must not __ water.
Down
- 1. Firefighters need ___
- 3. A small are of still fresh water.
- 4. Water from rivers is not always ___.
- 5. Sea water is __.