Bio unit 9

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Across
  1. 3. Non native species that harm ecosystems
  2. 4. Area where freshwater mixes with saltwater
  3. 8. Network of interconnected food chains
  4. 9. Variety of living organisms in an area
  5. 11. biomes Water based ecosystems
  6. 12. Area of water with no sunlight
  7. 14. Large region with specific climate plants and animals
  8. 16. Openings in ocean floor releasing hot water
  9. 19. Species found only in one location
  10. 20. Area of water where sunlight reaches
  11. 21. Stable mature ecosystem after succession
  12. 22. Partnership between fungus and algae or bacteria
Down
  1. 1. Species with major impact on ecosystem
  2. 2. Succession starting with no soil
  3. 5. Land based ecosystem
  4. 6. Succession where soil already exists
  5. 7. Two species cannot share the same niche long term
  6. 10. First species to colonize an area
  7. 13. Harmful substances in the environment
  8. 15. Too many individuals for environment to support
  9. 17. Clearing or removal of forests
  10. 18. Increase in Earths average temperature