Existing, endangered, extinct

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Across
  1. 3. An invertebrate found wiggling in the soil!
  2. 5. A type of fossil fuel
  3. 6. A describing word
  4. 7. A, an, the
  5. 9. The name of a person, place, animal or thing
  6. 11. An endangered bear
  7. 13. An animal with a backbone
  8. 15. The acronym for the 7 characteristics of living things
  9. 17. ..elephant
  10. 18. An animal or plant species which no longer exists
Down
  1. 1. The long term weather conditions of a region
  2. 2. Africa, Asia and Europe are examples of these.
  3. 4. A doing word
  4. 8. An animal without a backbone
  5. 10. A region distinct by its climate, vegetation and wildlife
  6. 12. The natural environment in which a plant or animal usually lives
  7. 14. A species of deer
  8. 16. The Greenhouse .....