Science 1206 Ecology Unit Review (3)

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Across
  1. 4. form of nitrogen that we and plants can use
  2. 5. an undesirable creature
  3. 9. a lake filled with nutrients that can suffer from algae blooms
  4. 10. what all food eaten eventually is converted to
  5. 15. a diagram showing the weight of all the creatures in each trophic level in a place
  6. 17. the black nutrient rich soil layer
  7. 21. the sugar made by photosynthesis
  8. 22. an example of an artificial ecosystem
  9. 23. type of competition that occurs between different species
  10. 26. the continuous path that carbon takes from one life form to another
  11. 27. name for each different level in a food chain or food web
  12. 28. a creature that gets killed by another as
  13. 31. a species that is the first to return to a disturbed area
  14. 32. the buildup of poisons in higher levels of a food chain
  15. 33. the role of an organism in its environment
  16. 36. any creature with no natural predators besides man
  17. 39. a diagram showing how many creatures are in each trophic level in a place
  18. 40. a diagram showing more than one predator or prey for creatures
  19. 41. person who coined the term ecology in 1866
  20. 43. the gas produced by photosynthesis
  21. 45. a cold climate biome that is home to shrubs and permafrost
  22. 46. competition that occurs between members of the same species
  23. 47. process done by soil bacteria to add nitrogen to soil
Down
  1. 1. an example of a natural ecosystem
  2. 2. a creature that eats other creatures to get food
  3. 3. the buildup of poisons in a single organism
  4. 6. an ecotone, where a river or stream flows into the ocean
  5. 7. the trophic level where producers and autotrophs are found
  6. 8. grey nutrient poor layer of soil
  7. 11. species that is the dominant species in ecological succession
  8. 12. actions that preserve a resource so it can be maintained forever
  9. 13. ecosystem where conditions are left alone by man
  10. 14. occurs when two creatures want the same thing
  11. 16. a creature which makes it's own food by not eating other creatures
  12. 18. ecosystem where conditions are strictly controlled by man
  13. 19. feeding diagram with no branches
  14. 20. the top layer of soil that contains dead material
  15. 24. the main way that humans put carbon into the atmosphere
  16. 25. a diagram showing how much energy is each trophic level in a place
  17. 29. a shocking way to get nitrogen from the air
  18. 30. a diagram showing only one predator and one prey of each creature
  19. 34. a creature whose only food is dead material
  20. 35. a creature which makes it's own food by not eating other creatures
  21. 36. the study of energy transfers
  22. 37. a creature that kills other creatures to get food
  23. 38. a creature that eats other creatures to get food
  24. 42. a transition area between two different environments
  25. 44. the study of how organisms interact with each other and their environment