biology crossword

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Across
  1. 3. the animal or plants that are at the bottom of the food chain
  2. 5. something that never has and never will live
  3. 6. only eats meat
  4. 9. a system of interlocking food chains
  5. 10. many different types of things
  6. 12. only eats dead things
Down
  1. 1. levels in an ecosystem
  2. 2. eats plants and meat
  3. 4. only eats plants
  4. 6. animals that eat other animals or plants for energy
  5. 7. a visual representation of how energy transfers through animals and plants
  6. 8. the way organisms live together
  7. 11. something living or that was once living