Across
- 6. Release of gases or substances into the air
- 8. Measure of environmental impact
- 9. Reprocessing materials to make new products
- 11. Existing in or caused by nature
- 14. Resource that can be replenished naturally
- 15. Science dealing with Earth's physical structure and substances
- 18. Returning something to its former condition
- 19. Meeting present needs without harming future generations
- 22. Presence of harmful substances in the environment
- 24. Decline in quality of land, water, or air
- 27. Visible features of an area of land
- 28. Keeping something in its original or existing state
- 29. Long-term weather patterns in a region
Down
- 1. Community of organisms and their physical environment
- 2. Action to reduce severity of environmental impact
- 3. Protection and preservation of natural resources
- 4. Element associated with fossil fuels and emissions
- 5. Animals living in their natural environment
- 7. Clearing of forests for other land uses
- 10. Structure or effect that traps heat
- 12. Contamination of air, water, or soil
- 13. Natural home of a plant or animal
- 16. Study of Earth's physical features and human activity
- 17. Natural materials used for economic gain
- 18. Specific area defined by natural or cultural features
- 20. Physical features of a stretch of land
- 21. Variety of life in a particular ecosystem
- 23. Adjustment to environmental changes
- 25. Surroundings or conditions in which living things exist
- 26. Grown or produced without synthetic chemicals