Across
- 3. use something again and again
- 6. to bring water to an area
- 7. contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere.
- 10. to wear away
Down
- 1. of taking materials ready to be thrown away and converting (changing) them into reusable materials.
- 2. to replant trees into cleared land
- 4. when a quiet area becomes like a city
- 5. to cut down large parts of forest
- 8. place where we bury garbage in the ground
- 9. to poke holes into the soil