[单选题]
Scientists analyzed the main con
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A. Land use and biomass burning
B. Industrial use
C. Residential sources
D. Agricultural production
参考答案:
D
本题详细解析:
The largest area in the pie charts showing sources of methane and nitrogen oxides is agricultural production.
Land use and biomass burning (Choice A) are a source of both methane and nitrous oxide but the area in the pie charts is less than agricultural production.
Industrial use (Choice B) releases mainly nitrous oxide.
Residential sources (Choice C) also release both methane and nitrous oxide but in lesser amounts than agricultural production.
