SL Bio- Topic 4

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Across
  1. 5. largest transfer of carbon in the carbon cycle
  2. 6. used to measure population density
  3. 7. the most effective pyramid at recording food chains
  4. 9. obtains nutrients from externally digesting dead organisms
  5. 11. wavelength which hits the earth from the sun
  6. 12. the % of energy transferred between trophic levels
  7. 15. a group of the same species living in the same area
  8. 17. used to determine statistical significance of data
  9. 21. an enclosed environment that allows a small natural environment to be observed in controlled conditions
  10. 22. an area which takes in more carbon than it releases (e.g. the ocean)
Down
  1. 1. heterotroph that feeds on dead matter
  2. 2. a group of organisms which can produce viable offspring
  3. 3. movement of carbon between sinks and the environment
  4. 4. obtains organic molecules from other organisms
  5. 8. obtains nutrients from abiotic environment
  6. 10. wavelength which is re-emitted from the earth and trapped
  7. 13. interaction of a biotic community and abiotic factors
  8. 14. the environment in which a species normally lives
  9. 16. used by oceanic invertebrates to make shells
  10. 18. conditions in which methane and peat are produced
  11. 19. different populations interacting with each other
  12. 20. heterotroph that ingests living organisms