Science crossword

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Across
  1. 5. earth's surface
  2. 7. frozen
  3. 8. water cycle
  4. 9. clouds
  5. 12. sun rays
Down
  1. 1. weather conditions
  2. 2. water on earth
  3. 3. daily change
  4. 4. gas
  5. 6. rain
  6. 10. carbon dioxide
  7. 11. organisms