Which of the following is true of archaea that produce methane?

A. they reduce carbon dioxide in the presence of nitrogen
B. they live in the most extreme environments
C. they are always anaerobes
D. they have been discovered on Mars


Ans: B. they live in the most extreme environments

Biology & Microbiology

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In a typical application, a DNA microarray is used to compare the ____________________

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Biology & Microbiology