GK QUESTION#3340
Which specific environmental condition found in waterlogged soils of rice paddies and wetlands directly facilitates the significant microbial production of methane a potent greenhouse gas?
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Answer
D. Anaerobic (oxygen-depleted) conditions
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Explanation
Waterlogging restricts oxygen supply and can create anaerobic soil conditions. Methanogenic archaea produce methane during anaerobic breakdown of organic matter in rice paddies and wetlands. High dissolved oxygen generally favours other pathways rather than methanogenesis.