Across
- 2. actions that maintain the natural resources in the environment
- 4. process in which used materials are turned into new products
- 5. goods that have a less harmful impact on the environment than traditional products
- 8. natural forms of energy, such as oil and natural gas
- 10. able to break down without causing harm when thrown out
- 11. gas made up of oxygen that naturally exists high above Earth's atmosphere
- 12. process of gathering food scraps and organic waste into a bin and letting it decompose and then adding it to soil to help plants grow
- 13. number that communicates to the public the level of pollutants in the air
Down
- 1. type of energy that cannot be used up like wind, water, and solar power
- 3. land that has hazardous waste
- 6. substances that contaminate the environment
- 7. fog mixed with smoke and chemicals
- 9. any form of precipitation that includes particles containing acid