Multiple Choice
In sewage-treatment systems, nitrifiers such as ________ are used to decrease the reduced nitrogen content.
A) Neisseria gonorrhoeae and N. meningitidis
B) Thiobacillus spp.
C) Nitrosomonas, Nitrosolobus, and Nitrosovibrio
D) Escherichia spp.
E) Helicobacter and Campylobacter
Correct Answer:

Verified
Correct Answer:
Verified
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