Consider the following: 1. Rice fields 2. Coal mining 3. Domestic animals 4. Wet lands Which of the above are sources of methane, a major greenhouse gas?

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YESPYQ · Accepted Answer

Correct answer: 1, 2, 3 and 4. Methane (CH₄) is a potent greenhouse gas with a global warming potential over 25 times greater than carbon dioxide (CO₂) over a 100-year period. The primary sources of methane emissions can be categorized into natural and anthropogenic (human-caused) sources. Option 1 is correct: Rice fields emit methane due to the anaerobic decomposition of organic matter in waterlogged conditions. This is a significant contributor to global methane emissions, particularly in rice-producing countries. Option 2 is correct: Coal mining releases methane trapped within coal seams during the mining process. This is known as fugitive methane emissions and is a key source of industrial methane. Option 3 is correct: Domestic animals, particularly ruminants like cattle and sheep, produce methane during enteric fermentation, a digestive process where microbes break down food in the stomach. Option 4 is correct: Wetlands are natural sources of methane, produced through the anaerobic decomposition of organic material in water-saturated soils. 380

Consider the following:1. Rice fields2. Coal mining3. Domestic animals4. Wet landsWhich of the above are sources of methane, a major greenhouse gas?

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Consider the following:1. Rice fields2. Coal mining3. Domestic animals4. Wet landsWhich of the above are sources of methane, a major greenhouse gas?

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