climate change

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Across
  1. 5. an effect that traps the heat generated by the sun
  2. 7. a permanent gas
  3. 9. the area of greatest warming
  4. 11. a chemical element
  5. 12. study of changing the natural process of earth
  6. 14. a species becomes fitted to its environment
  7. 16. temperature data
  8. 17. measure of hotness or coldness
  9. 18. relating to the whole world
  10. 19. darker areas on the sun's surface
Down
  1. 1. eruptions that release sulfur dioxide
  2. 2. contains the air we breathe and weather
  3. 3. thin layer of gasses that surrounds the earth
  4. 4. huge body of salt water
  5. 6. very dry and less dense than troposphere
  6. 8. the mass of a unit
  7. 10. long-term weather pattern in a region
  8. 12. period where glaciers are growing and advancing
  9. 13. earth's surface temperature is lowered
  10. 15. a variable gas