Ecosystems and Biomes

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Across
  1. 1. a leafy roof formed by tall trees in a forest
  2. 3. the pattern of overlapping food chains in an ecosystem
  3. 7. a layer of shorter plants that grow in the shade of a forest canopy
  4. 9. the study of where organisms live
  5. 10. the movement of organisms from one place to another
  6. 12. a diagram that shows the amount of energy that moves from one feeding level to another in a food web
  7. 14. an organism that obtains food buy feeding on other organisms
  8. 15. a series of events in which one organism eats another and obtains energy
  9. 17. consumers that eat both plants and animals
  10. 18. a carnivore that feeds on the bodies of dead organisms
  11. 19. an area that is populated mostly by grasses and other non woody plants
Down
  1. 2. an organism that can make its own food
  2. 4. consumers that only eat animals
  3. 5. the process of changing free nitrogen gas into a usable form
  4. 6. a group of land ecosystems with similar climates and organisms
  5. 8. consumers that only need plants
  6. 11. soil that is frozen all year long
  7. 13. organisms that break down wastes and dead organisms and return the raw materials to the ecosystem
  8. 16. an area that receives less than 25 centimeters of rain per year
  9. 20. a grassland close to the equator that receives as much as 120 centimeters of rain per year