Topics: Bacterial Growth and Culturing Conditions Quiz
Which domain of life includes organisms that live in extreme environments?
A. Bacteria
B. Archaea
C. Eukarya
D. All of the above
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What is the role of nitrogen-fixing bacteria in the nitrogen cycle?
A. They fix carbon dioxide into organic molecules
B. They fix nitrogen gas into ammonia
C. They fix nitrogen gas into oxygen
D. They fix oxygen gas into water