Unit 8 Test Review Crossword Puzzle

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Across
  1. 1. The result of over-grazing farm animals
  2. 3. Mushrooms are an example of a _________.
  3. 6. Eats only plants
  4. 7. A group of the same species
  5. 9. Hunted by predators for food, like a rabbit
  6. 10. Both organisms benefit
  7. 11. Eats both plants and animals
  8. 13. A living part of an ecosystem
  9. 14. An energy ________ shows how energy in an ecosystem decreases at each level.
  10. 16. Primary, secondary, tertiary
  11. 18. Food, water, shelter, space are called _______ factors
  12. 19. Always at the base of an energy pyramid
  13. 20. Eats only animals
Down
  1. 2. A group of different species
  2. 3. The removal of trees from an environment
  3. 4. Mutualism, commensalism, and parasitism are ________ relationships.
  4. 5. One organism benefits, the other is unaffected
  5. 7. One organism benefits, the other is harmed
  6. 8. The movement of humans into a city
  7. 12. A limiting factor involving two or more species fighting over something
  8. 15. Hunt prey for food, like a lion
  9. 17. A non-living part of an ecosystem