Ecology Review

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Across
  1. 1. example of unicellular organism
  2. 5. one organism benefits from the relationship, while the other organism (the host) is harmed
  3. 7. model where population grows without limit
  4. 8. stage of the carbon cycle when carbon dioxide is released into the atmosphere from burning fossil fuels
  5. 10. where competition is occurring within the same species
  6. 11. organism hunting/killing another for food
  7. 14. our planet and all biotic and abiotic factors on it
  8. 15. the levels of nourishment in a food chain
  9. 17. occurs in an area that was previously occupied by living organisms, but the community was destroyed by a disturbance; examples include fires, farming, hurricane
  10. 18. shows a single flow of energy through organisms
  11. 20. multiple ecosystems that share similar characteristics
  12. 24. type of reproduction that results in identical offspring
  13. 27. both organisms involved benefit
  14. 28. organisms that feed on producers
  15. 29. where competition is occurring between different species
  16. 32. individual member of a species or population
  17. 33. type of resource that can only be replaced over extended periods of time
  18. 36. study of relationships between 2 organisms or between an organism and its environment
  19. 37. the role that an organism plays in its environment
  20. 41. movement of a particular form of matter through the living and nonliving parts of an ecosystem
  21. 44. when two or more organisms are fighting for the same limited resource
  22. 45. organisms composed of two or more cells
  23. 46. study of describing, naming, and classifying organisms
  24. 52. stage of the carbon cycle when carbon dioxide is released into atmosphere as waste by consumers
  25. 53. consumers that get energy from eating living or once living organisms
  26. 55. a mature and stable community of plants and animals
  27. 56. mass cutting down of trees and forests; decreases transpiration
Down
  1. 1. living factors in an ecosystem like food, mates, or competition for resources
  2. 2. one organism is benefited while the other is unaffected
  3. 3. stage of the nitrogen cycle when bacteria convert nitrogen into a usable form for plants to absorb through their roots
  4. 4. any interaction that involves a close, physical, long term relationship between two species
  5. 6. shows multiple food chains at once, and how they interconnect
  6. 9. limiting factors that operate more strongly on large dense populations and are usually caused by biotic components like competition or predation
  7. 12. type of resource that can be replenished
  8. 13. stage of the carbon cycle where plants use take in sunlight and carbon dioxide and use it to make glucose
  9. 15. water vapor released from leaves
  10. 16. species the first organisms to grow in a new environment
  11. 19. limiting factors that regulate population growth regardless of size or density like weather or natural disasters
  12. 21. model where population grows quickly at first and then levels off
  13. 22. as energy flows from organism to organism, it is used for metabolism and/or converted to heat so the next organism on the chain only receives 10 PERCENT of the energy obtained in the previous level
  14. 23. same size as community level but adds abiotic factors
  15. 25. organisms that feed on secondary consumers
  16. 26. where an organism lives
  17. 30. maximum population that a given environment can support
  18. 31. stage of the nitrogen cycle when bacteria or lightning in soil or water convert nitrogen from a gas into an organic compound
  19. 34. multiple individuals of same species living together
  20. 35. species that are not native to an area and tend to thrive because they have no natural predators
  21. 38. organisms that feed on primary consumers
  22. 39. organisms composed of only one cell
  23. 40. nonliving factors in an ecosystem like space, temperature, sunlight, or rainfall
  24. 42. occurs when a community forms in an area that has not been previously occupied; examples include exposed rock, lava, melted ice, eroded sand
  25. 43. multiple populations of different species living together
  26. 47. variety of organisms considered at all levels, from populations to ecosystems
  27. 48. water seeping into ground to become groundwater
  28. 49. liquid water changing to a gas; increases with heat/temperature
  29. 50. producers that use sunlight to make their own energy
  30. 51. type of reproduction that results in lots of genetic variation
  31. 54. organism killed/consumed as food