Marsh gas
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Marsh gas, also known as swamp gas or bog gas, is a mixture primarily of methane and smaller amounts of hydrogen sulfide, carbon dioxide, and trace phosphine that is produced naturally within some geo
Bubbles of methane, created by methanogens, that are present in the marsh, more commonly known as marsh gas.
Sewer gas
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Sewer gas is a complex, generally obnoxious smelling mixture of toxic and nontoxic gases produced and collected in sewage systems by the decomposition of organic household or industrial wastes, typica
Marsh gas
…Natural gas Sewer gas Wetland methane emissions…
An old sewer gas chimney in Stonehouse, Plymouth, England, built in the 1880s to disperse sewer gas above residents
The cover of an 1882 issue of The Wasp, with an illustration linking sewer gas and disease