During anaerobic decomposition of organic matter with carbon dioxide as the terminal electron acceptor, the primary gas(es) produced is/are
A) oxygen.
B) hydrogen sulfide.
C) methane.
D) hydrogen.
E) methane AND hydrogen.
Correct Answer:
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Q21: The zone of soil that surrounds the
Q22: Atmospheric nitrogen is
A) used directly by plants.
B)
Q23: The organisms that convert carbon dioxide into
Q24: Next to carbon and oxygen, the element
Q25: The sulfur cycle is similar to the
Q27: The nitrogen in our atmosphere is only
Q28: The carbon cycle revolves around
A) nitrogen.
B) carbon
Q29: Azotobacter
A) are the chief suppliers of fixed
Q30: Turning inorganic carbon into organic carbon is
Q31: Nitrogen is
A) an important constituent of carbohydrates
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