동식물과 같은 생물체나 그 배설물 등 유기성 폐기물에서 얻는 에너지원.
A type of energy source produced from contemporary biological processes, such as agriculture or anaerobic digestion, rather than geological processes like those involved in the formation of fossil fuels.
예문:
"The airline industry is testing biofuel made from used cooking oil to reduce carbon emissions."
"Farmers are increasingly growing corn and sugarcane specifically for biofuel production."
"Switching from fossil fuels to biofuel can significantly lower a vehicle's environmental footprint."