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