Other crossword clues for answer "METHANE"METHANEGas found around marshesMarsh gasCH4Swamp gas, mostlyMarsh gas, mostlyPolluting gasMarsh hydrocarbonCoal mine productSwamp gas, essentiallyA natural gasA greenhouse gasHydrocarbon used as fuel.Firedamp.Dangerous mine gas.Marsh gas, essentiallyMarsh gas constituentNatural gas constituentDangerous buildup in a mineCoal miner's concernFlammable gas represented in 18-Across and 9-DownDairy farm productGreenhouse gas produced by cowsCH4 (natural gas)Type of gasFlammable gasFuel gasMarsh emanationFiredamp, for the most partCarbureted hydrogen, more familiarly