what goes where?

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Across
  1. 3. an animal that eats everything
  2. 8. an animal without a backbone
  3. 10. an animal that eats primary consumers
  4. 13. warm blooded creatures with lungs
  5. 14. usually a pplant. start off the food chain
  6. 15. an animal that gets eaten by other animals
Down
  1. 1. a meat eating animal
  2. 2. lots of interlocking food chains
  3. 4. has gills when they are young, and lungs when adult (frogs go in this group)
  4. 5. an animal that eats secondary consumers
  5. 6. an animal with a backbone
  6. 7. a hunter of other animals
  7. 9. a plant eating animal
  8. 11. a living thing (begins with O)
  9. 12. eats dead plants