Across
- 3. to use something again
- 4. something making land, water or sky dirty
- 5. to watch and help an animal or the environment
- 8. to keep safe from injury, harm, or destruction
- 9. an area of land where large amounts of waste material are buried under the earth
Down
- 1. to treat things that have already been used so they can be used again
- 2. The act of cutting down or burning trees in a area
- 6. to make less rubbish
- 7. a large amount of water covering an area that is usually dry