agriculture algae anaerobic digestion biochar biodegradable waste bioenergy biofuel biological material biomass research and development board biomass heating systems biomass to liquid biome bioplastic biorefinery carbon cycle carbon monoxide char coal combustion composting continental shelf corn kernels decompiculture desert destructive distillation distillation ecosystem electricity energy crop estuary ethane eucalyptus evergreen forest fermentation forest fossil fuel geothermal power global warming hemp hydroelectricity hydrogenation industry lake maize marsh metamorphism methane microgeneration microgeneration certification scheme miscanthus monsoon normalized difference vegetation index oil palm palm oil petroleum photosynthesis pyrolysis reef renewable energy scrubland solar energy sorghum standing crop stream sugarcane swamp temperate deciduous forest tidal power tree upwelling wave power willow wind power wood fuel world council for renewable energy