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