Across
- 2. process of converting waste into reusable materials
- 4. reuse old items to create something of higher value
- 6. unwanted or unusable materials
- 8. fuels natural fuels like coal oil and gas formed from dead organisms
- 9. able to be maintained without harming the environment
Down
- 1. make something dirty or unsafe by adding harmful substances
- 2. energy energy from sources that will not run out like sun and wind
- 3. change long term change in global weather patterns
- 5. warming increase in Earth’s average temperature
- 7. use up resources or materials