Organising organisms

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Across
  1. 4. Green produce their own sugar
  2. 5. Monotremes (platypus & echidna)lay these
  3. 6. Animal that can't keep itself warm is -blooded
  4. 8. Provides energy for plants to make sugar
  5. 9. Animal with a backbone
  6. 10. Inter-related system of organisms environment
  7. 12. Animal with no backbone
Down
  1. 1. Animal that can keep itself warm is - blooded
  2. 2. A living thing
  3. 3. Consumes meat of other animals
  4. 4. Makes sugar from sunlight + water + CO2
  5. 6. Eats other organisms (plants or animals)
  6. 7. Only birds have these
  7. 11. A consumer that eats plants