Across
- 5. in salt causing high blood pressure
- 6. gas in signs
- 7. third element in table
- 9. devoid of viable microbes
- 10. element atomic mass 12
- 13. what a cow says
- 14. poison gas in WWI
- 17. produced oxygen for earth's atmosphere
- 20. first in periodic table
- 21. coin made of copper
- 22. gelling agent for media plates
Down
- 1. starts june 21
- 2. hog
- 3. found in air conditioner
- 4. contains c double bond o
- 5. 4-sided figure
- 8. makes 80% of air
- 11. used in hockey
- 12. iron sulfide
- 13. silver liquid element
- 15. staining method in bacteriology
- 16. radioactive gas
- 18. remind after fire
- 19. 10% of 200
- 21. virus infecting bacteria