Nature elementary

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Across
  1. 2. - cave
  2. 7. - waterfall
  3. 8. fuels fossile fuels
  4. 10. rainbow
  5. 12. flora
  6. 14. cave
  7. 16. lake
  8. 17. eclipse - moon eclipse
  9. 18. - desert
Down
  1. 1. - jungle
  2. 3. volcano
  3. 4. - grass
  4. 5. reef - coral reef
  5. 6. pollution
  6. 8. fauna
  7. 9. galaxy
  8. 10. rocks
  9. 11. waves
  10. 13. recycle
  11. 15. planets