The production of biogas from the fermentation of waste materials is an example of? by Sunday | Dec 11 | Chemistry WAEC | 0 comments A. combustion B. incineration C. refining D. recycling Correct Answer: Option D D. recycling Users Also Read These:The by-product of the fermentation of sugar to ethanol is?A farm produce which does not require fermentation…Two different materials, rubbed against each other…The products of fermentation of sugar are?The by-product of fermentation of sugar is?