Across
- 2. Removal of forests converted to non-forest use
- 4. Building malls, parking lots, and other urban development
- 8. succession Succession after a disturbance where soil remains
- 10. When fertile land becomes desert
- 11. Variety of life in a particular habitat or ecosystem
- 14. species Species that naturally occur in an area
- 17. Another word for removal (as in forest clearance)
- 18. Natural materials organisms compete for (food, water, space)
- 20. A disturbance that can trigger secondary succession
Down
- 1. What animals often must do when habitats are destroyed
- 3. Contamination that harms ecosystems (air, water, or land)
- 5. Supplying water to land for agriculture (can be misused)
- 6. succession Succession starting on a barren habitat with no previous life
- 7. Natural home or environment of an organism
- 9. Excessive grazing that damages vegetation and soil
- 12. species Non-native organism that harms native ecosystems
- 13. To bring a non-native species into a new environment
- 15. Gradual change in species composition over time
- 16. Community of interacting organisms and their environment
- 19. erosion Loss of topsoil often worsened by deforestation or overgrazing