Interactions and ecosystems - Topics 1-4

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Across
  1. 5. Organisms that produce their own food energy through photosynthesis
  2. 8. Something we like to have but don't really need
  3. 9. Organisms that break down dead material and return the nutrients to the soil
  4. 11. Pesticide that is now banned in Canada as it caused the thinning of birds eggshells
  5. 12. A model that shows how energy stored in food passes from organism to organism
  6. 13. The interactions between living and non living things in an environment
  7. 17. The various levels on the pyramid of numbers and biomass
  8. 19. An organism that is hunted for food
  9. 21. Symbiosis whereby one organism benefits and the other neither benefits or is harmed
  10. 22. The role of an organism
  11. 24. Non living things in an environment
  12. 25. Where an organism lives
  13. 27. An organism that kills other organisms for food
  14. 28. The materials and products that are found in nature (ex: water, oil, trees, etc)
  15. 30. Symbiosis whereby both organisms benefit
  16. 31. Network of interconnected food chains
  17. 32. Organisms that feed on dead or decaying plant or animal matter
  18. 34. Organism that eats plant and meat
  19. 35. A portion of this is lost at each level of a food chain
  20. 36. Resources of nature are being renewed at least as quickly as they are being used.
Down
  1. 1. Symbiosis where one organism benefits and the other is harmed
  2. 2. Inherited characteristics that help an organism survive in it's environment
  3. 3. This type of consumer eats secondary consumers
  4. 4. A scientist who studies ecology
  5. 6. An organism that only eats plants
  6. 7. This type of consumer eats primary consumers
  7. 10. The total mass of all organisms in an ecosystem.
  8. 14. Source of energy
  9. 15. Relationship that exists between 2 different organisms.
  10. 16. The total area of land and water needed to supply all the materials and energy a human uses, as well as absorb the waste
  11. 18. Living things in an environment
  12. 19. Type of consumer that is a herbivore
  13. 20. An organism that only eats meat
  14. 23. Shelter, air, food, water
  15. 26. Pyramid that shows the number of organisms at each level of the food chain
  16. 29. The study of the relationships between living things and their environment
  17. 33. An organism that consumes other organisms