Weather prediction

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Across
  1. 3. periods of very high temperatures
  2. 5. the a mount of water vapour in the air
  3. 8. a period of ten years
  4. 10. a measurement of heat
  5. 12. of the earth
  6. 13. wether balloons
  7. 14. when water drops from the clouds
  8. 15. forecasts of the future
Down
  1. 1. the conditions over a longer period of time
  2. 2. the conditions over a short period of time
  3. 4. the movement of air
  4. 6. a period of one hundred years
  5. 7. the layer of gases that surround earth
  6. 9. getting warmer
  7. 11. a person who studies the weather