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Vegetation submerged in dam reservoirs rots anaerobically and releases which greenhouse gas?

AArgon
BHelium
CMethane
DOxygen
Answer & Solution
Correct answer: C. Methane
1. Large ecosystems drown under reservoirs. 2. Rotting vegetation gives off methane. 3. Displacement of people is another problem. _Source: syllabus Science, Chapter 14, Sources of Energy._
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