# 1Pilihan bergandaWhich of the following is considered a source of bioenergy?Natural gasCoalBiomassUranium
# 2Pilihan bergandaWhat is the main advantage of using bioenergy over fossil fuels?Higher energy densityUnlimited supplyCarbon neutralityEasier transportation
# 3Pilihan bergandaAnaerobic digestion primarily produces which type of biofuel?BioethanolBiodieselBio-oilBiogas
# 4Pilihan bergandaWhich process is used to convert plant starches into bioethanol?TransesterificationFermentationPyrolysisGasification