Nature/ animals

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Across
  1. 4. 4 leaves for good luck
  2. 5. bug with 8 legs
  3. 11. polar region
  4. 12. rural land and scenery
  5. 14. piece of land almost entirely surrounded by water
  6. 15. aquatic larva or immature forms of frogs
  7. 16. animals in the wild
  8. 18. edge of land near sea or ocean
  9. 20. area of relatively high ground
Down
  1. 1. area of low land between mountains or hills (where we live)
  2. 2. animal with a backbone
  3. 3. phase or shape of the moon as it appears in the first or last quarter
  4. 6. mountain or hill with a crater that erupts lava
  5. 7. a stream of water that falls from a higher area to a lower area
  6. 8. the 4 divisions of the year
  7. 9. area of land that is surrounded completely by water
  8. 10. clumps of shrub
  9. 13. being active during the night and sleeping during the day
  10. 17. plants of a particular area
  11. 19. a mixture of rain and ice