SS Ch 34

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Across
  1. 3. the number of organisms in a population
  2. 9. the process of new species moving into an ecosystem that has been decimated by a catastrophe or into a previously uninhabited area
  3. 12. referring to land
  4. 13. the specific gasses that are responsible for creating the greenhouse effect: carbon dioxide, methane, and water vapor
  5. 14. the number of organisms per a given area of land
  6. 16. a situation that exists when a prey species looks like a dangerous species to scare predators away, or the situation when a predator looks like a harmless species so as not to scare prey away
  7. 18. the theory that the overall combined average temperature of the earth is increasing mainly because of the burning of fossil fuels
  8. 20. the recycling of elements and materials in ecosystems
  9. 24. all non-living components of an ecosystem
  10. 25. a relationship between two organisms in which one is eaten by the other
  11. 26. the relationship of energy transfer between producer and consumers in an ecosystem
  12. 28. all of the living components of an ecosystem
  13. 29. the process by which certain gasses in the atmosphere trap heat around the earth
  14. 31. the relationship that exists between producers and consumers in all ecosystems and explains how one species obtains energy molecules and nutrition from another
Down
  1. 1. the cyclic pathway oxygen takes as it passes from organic to inorganic forms
  2. 2. the sequential replacement of species over time following the emergence of pioneer species
  3. 4. groups of ecosystems underwater
  4. 5. the cyclic pathway carbon takes as it passes from organic to inorganic forms
  5. 6. the water cycle
  6. 7. the main, large ecosystems of the earth
  7. 8. biomes that are found in bodies of fresh water
  8. 10. the first organisms into a previously unpopulated area
  9. 11. the thin, physical layer of the earth in which all living organisms are found
  10. 15. all the members of a certain species living at one place at one time
  11. 17. plant species
  12. 19. pathway water takes to get to the earth's surface from the atmosphere or trickling into the earth to become groundwater
  13. 21. biomes located in bodies of salt water
  14. 22. animalspecies
  15. 23. position that an organism occupies in the food pyramid
  16. 27. the complex relationship that producers and consumers have with one another in an ecosystem
  17. 30. scientists who study ecology