Climate and Atmosphere Crossword Puzzle

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Across
  1. 5. A fundamental element in all life forms, also a greenhouse gas
  2. 9. The layer of gases surrounding Earth
  3. 11. The layer above the stratosphere
  4. 12. The tilt of Earth's axis
  5. 13. The average atmospheric conditions in an area over time
  6. 16. The lowest layer of Earth’s atmosphere, where weather occurs
  7. 18. The path of Earth around the Sun
  8. 19. The wobble of Earth's rotational axis
  9. 20. Relating to the movement of water
Down
  1. 1. The state of the atmosphere at a specific time
  2. 2. The layer of the atmosphere where the ozone layer exists
  3. 3. A climate pattern causing warm ocean temperatures in the Pacific
  4. 4. A major component of the Earth's atmosphere
  5. 6. A period of time when glaciers covered large parts of the Earth
  6. 7. A climate pattern causing cool ocean temperatures in the Pacific
  7. 8. A key nutrient for plants, often found in fertilizers
  8. 10. Release of gases into the atmosphere
  9. 14. A potent greenhouse gas produced by agriculture and landfills
  10. 15. Traps heat in the atmosphere
  11. 17. The shape of Earth's orbit around the Sun