Across
- 4. The act of reusing trash for something new.
- 5. Liquids that are released into oceans by factories.
- 7. When animals move away from their homes.
- 8. Water that has been contaminated by something harmful.
- 9. All the water on earth's surface.
Down
- 1. A material that is very harmful for aquatic animals.
- 2. The place where water is cleaned.
- 3. The opposite of salty water.
- 6. A synonym for trash.