Answer: biogas

AnswerCrossword Clue
BIOGASRenewable fuel derived from organic matter
BIOGASResult of some fermentation
BIOGASFuel derived from fermenting organic waste
BIOGASFuel mixture
BIOGASManure byproduct
biogasany gas fuel derived from the decay of organic matter, as the mixture of methane and carbon dioxide produced by the bacterial decomposition of sewage, manure, garbage, or plant crops
biogasgas obtained by bioconversion