Across
- 3. The spreading of city development onto undeveloped land
- 6. A fibrous mineral that has fireproof properties
- 7. An odorless, radioactive gas, that causes at least 14,000 lung cancer deaths per year
- 9. Able to be broken down by microorganisms in the environment
- 10. An area that has been safeguarded to prevent disposed wastes from contaminating groundwater
- 12. The contamination of the Earth's atmosphere by substances that pose a health threat to living things
- 13. A unit used to express the relative intensity of loudness of sound
Down
- 1. Reducing waste before it is generated
- 2. Harmful and unwanted sound of sufficient intensity to damage hearing
- 4. The protection and preservation of the environment by managing natural resources to prevent abuse, destruction, and neglect
- 5. The processing of waste materials so that they can be used again
- 8. An index for reporting daily air quality
- 11. Used water that comes from homes, businesses, communities, and farms