Across
- 2. something making land, water or air dirty
- 5. to use something again
- 7. the act of cutting trees in an area
- 8. to make less (rubbish)
- 9. a large amount of water covering an area that is usually dry
- 10. where large amounts of waste material are buried under the earth
Down
- 1. to keep safe from harm or injury
- 3. energy sources such as wind, water and sunlight
- 4. arrangement of organisms, each of them eating the next in line
- 6. to treat things that have already been used so they can be used again