A. in the presence of oxygen
B. in the presence of nitrogen
C. in the absence of oxygen
D. differential media
Correct Answer: in the absence of oxygen ✔
Last Updated: February 07, 2020
A. in the presence of oxygen
B. in the presence of nitrogen
C. in the absence of oxygen
D. differential media
Correct Answer: in the absence of oxygen ✔
Last Updated: February 07, 2020