A. Nitrogen
B. Oxygen
C. Neon
D. Carbon monoxide
Submitted by: Ashfaque Ali Khoso
Correct Answer: Oxygen ✔
Last Updated: May 29, 2019
A. Nitrogen
B. Oxygen
C. Neon
D. Carbon monoxide
Submitted by: Ashfaque Ali Khoso
Correct Answer: Oxygen ✔
Last Updated: May 29, 2019