COAA-happynewyear

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Across
  1. 3. a threat to the Earth
  2. 5. a large storm
  3. 6. a vast, flat, treeless Arctic region
  4. 7. seeds of cloud (abbr.)
  5. 8. a large mass of ice
  6. 11. emission through a volcano
  7. 13. a large system of ocean currents
  8. 15. Chinese zodiac animal of 2022
  9. 16. burning
  10. 18. breathing
  11. 19. one of the five oceans
Down
  1. 1. small floating or weakly swimming organisms
  2. 2. fifth largest planet in solar system
  3. 4. a supercontinent of ancient earth
  4. 7. movement of fluid
  5. 9. radiation with a wavelength of 800nm - 1mm
  6. 10. the name of our association
  7. 11. flash
  8. 12. wispy cloud
  9. 14. molecule with molar mass of 48
  10. 17. mineral
  11. 20. measure of vegetation net metabolism (abbr.)