A. It is cheaper
B. Nitrogen content is higher
C. It is not poisonous
D. It is easy to manufacture
Correct Answer: Nitrogen content is higher ✔
Last Updated: March 11, 2019
A. It is cheaper
B. Nitrogen content is higher
C. It is not poisonous
D. It is easy to manufacture
Correct Answer: Nitrogen content is higher ✔
Last Updated: March 11, 2019