Across
- 3. to treat things that have already been used so they can be used again.
- 6. to use something again
- 8. to watch and help an animal or the environment
- 9. the act of cutting down or burning trees in a area
- 10. a large number of water covering an area that is usually dry
Down
- 1. to make less rubbish
- 2. which is harmful to earth and took between 20 to 500 years to decompose
- 4. something making land, water or sky dirty
- 5. to keep safe from injury, harm or destruction
- 7. an area of land where large amounts of waste material are buried under the earth