Across
- 4. things that are available to be used (e.g., coal, gas, oil,...)
- 5. things that are no longer used or wanted
- 6. environmentally friendly
- 8. process something to make it usable again
Down
- 1. use again
- 2. the mark or effect that something leaves behind
- 3. make an amount or number smaller
- 7. the air, water and land around us