Ecosystems- end of unit review

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Across
  1. 2. the amount of a particular organism that can comfortably live in an area
  2. 5. Primary consumers are usually__________
  3. 6. a simple diagram of relationships that show energy flow of an organisms last meal
  4. 8. An organism that hunts, kills and eats another organism
  5. 9. Energy and _____ are passed from one organism to the next in a food web or chain
  6. 11. food, water or living space needed to keep an organism alive
  7. 12. something that makes a living thing react
  8. 13. bees chase off tree hoppers predators and get food from the tree hopper as a reward
  9. 14. In a ____ ____ the arrows show energy flow and point to the thing doing the eating
  10. 15. something that keeps a population from getting too big
  11. 16. ticks need blood to survive, the victim is harmed but lives.
Down
  1. 1. when 2 or more organisms have a long term relationship with each other that helps one or both of them
  2. 3. when one species benefits and the other does not notice or care
  3. 4. Living things like a tree are also _________
  4. 7. get all of their energy from the sun
  5. 8. an organism that is killed and eaten by another animal
  6. 10. when 2 organisms both want the same resource