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Deep Inside Landfills, Bacteria Decompose Organic Wastes in a Low

Question 52

Multiple Choice

Deep inside landfills, bacteria decompose organic wastes in a low oxygen environment. This anaerobic decomposition results in a mix of gases called landfill gas, which consists of about 50% ________________.


A) methane
B) hydrogen
C) argon
D) carbon monoxide
E) chlorine gas

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