Across
- 1. mixture of gases that surrounds the Earth
- 4. things that ends up on the ground or in lakes and seas
- 6. mixture of ingredients used as plant fertilizer
- 8. all of the living and non-living components of an environment
- 9. radiation from the sun capable of producing heat
- 11. energy derived from natural sources that replenished at a higher rate than consumed
- 12. substances released into the air
- 15. managed facilities for the disposal of solid waste
Down
- 2. complete disappearance of a species from earth
- 3. complex of physical,chemical, and biotic factors
- 5. protects the environment from harmful human activities
- 7. practice of using natural resources responsibly
- 10. involving organisms or the products of their life processes
- 13. practice of caring for these resources
- 14. introduction of harmful materials into the environment