Human Impact

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