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Amongst all the greenhouse gases (GHG) present in the atmosphere methane has assumed considerable significance. Atmospheric concentration of methane has almost doubled after industrial revolution. It contributes to 20% of total GHG effect. In industrial countries, 15% of total GHG contribution comes as methane emission and it is expected to contribute to
18% of the total expected global warming over the next 50 years. Along with the warming effect, methane also participates in troposphere ozone formation, which amplifies methane

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