Across
- 1. pollution Contamination of environment harming living organisms, ecosystems.
- 2. Livestock herding, moving seasonally for fresh pastures.
- 3. Theory humans can overcome environmental limitations through innovation.
- 5. Organism whose genetic material has been altered.
- 10. erosion Wearing away of topsoil by wind or water.
- 11. Fair treatment in environmental policies and practices.
- 13. Community of organisms interacting with their environment.
- 14. Trapping of heat by Earth's atmosphere causing warming.
- 15. Surrounding conditions affecting organisms, including natural elements.
- 17. Underground layer of water-bearing permeable rock.
- 20. large-scale removal of forests for non-forest use.
- 22. Moving cultivation areas to allow soil recovery.
- 23. Previously industrial site, now potentially redevelopable land.
- 24. salinization Accumulation of salts in soil, reducing fertility.
- 25. Atmospheric gas protecting Earth from harmful ultraviolet radiation.
- 26. Unplanned, uncontrolled urban expansion into rural areas.
- 28. Rain with high levels of acidic pollutants.
- 29. Leaving farmland unplanted to restore its fertility.
- 30. Protected areas of open land around urban regions.
Down
- 1. Theory that environment shapes human culture, development.
- 4. Natural material supporting plant growth, composed of minerals.
- 6. Tourism focused on visiting natural, conserved areas sustainably.
- 7. Farming of aquatic organisms for commercial purposes.
- 8. Large ecosystem with distinct climate and organisms.
- 9. Land degradation transforming fertile land into desert.
- 12. of gases surrounding Earth, sustaining life.
- 16. Global sum of all ecosystems supporting life.
- 18. Alternating crops or land use to maintain soil.
- 19. Maximum population an environment can sustainably support.
- 21. Oxygen-depleted areas in water, causing marine death.
- 27. Earth's interacting living and non-living environmental systems.