Across
- 4. approach aims to eliminate all waste, making everything reusable
- 5. symbol with three chasing arrows, representing recycling
- 6. This gas, often associated with landfills, contributes to the greenhouse effect
- 8. Turning waste materials into new products of higher quality or value
Down
- 1. substance discarded after primary use, or is worthless, defective and of no use
- 2. the process turns organic waste into nutrient-rich soil
- 3. facility where waste is buried in the ground
- 7. material is commonly recycled and made from sand