Unit 9 Choice Board

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Across
  1. 4. harmful materials released onto Earth
  2. 6. Succession, predictable changes after disturbances
  3. 8. Species, key organism that helps maintain an ecosystem
  4. 11. Zone, no light and no photosynthesis
  5. 12. created from plants and fungi
  6. 14. Warming, long term changes in temperatures
  7. 16. clearing forests
  8. 17. Species, 1st to inhabit an ecosystem
  9. 18. Zone, light penetrates and photosynthesis occurs
  10. 20. Community, mature ecosystem
  11. 21. measurement of richness, evenness, and endemic species
Down
  1. 1. Web, visual representation of feeding interactions
  2. 2. Exclusion Principle, no two organisms can occupy the same niche at the same time
  3. 3. succession, predictable changes in an ecosystem
  4. 5. populations are too high
  5. 7. Vents, pocket ecosystems at bottom of ocean
  6. 9. Biome, water ecosystem
  7. 10. Biome, land ecosystem
  8. 13. Species, non-native species in a community
  9. 15. collection of ecosystems characterized by similar temperatures, rainfall amounts, and climax communities
  10. 19. where fresh and salt water meet