Across
- 6. an area of land that drains surface water into a river
- 8. The Environmental Protection Agency enforces clean air and _____ acts
- 9. materials that are formed naturally and can break down in the environment
- 10. controls the international trade of endangered species
- 11. land recovery process that is required after mining operations
- 12. water pollution that washes into storm sewers from many different places
- 13. the National Park Service manages national parks and _______.
Down
- 1. energy resources that are still in development
- 2. an underground rock formation that stores water
- 3. an artificial lake created behind a dam
- 4. addresses the issue of ozone depletion
- 5. water that collects in streams, lakes, rivers, and oceans
- 7. acronym for national oceanic and atmosphere administration
- 11. energy resources that are constantly being formed