Example image of eyePlorer eyePlorer map for 'Biomass': Biological material Electricity Tree stump Chemical substance Biodegradable waste Coal Fossil fuel Metamorphism Organic matter Petroleum Eucalyptus Hemp Maize Miscanthus Oil palm Palm oil Panicum virgatum Populus Sorghum Sugarcane Tree Willow Alkali metal Alkaline earth metal Heavy metal (chemistry) Black liquor Waste-to-energy Ethanol Combustion Gasification Pyrolysis Torrefaction Cofiring Anaerobic digestion Composting Fermentation Transesterification Carbon dioxide Normalized Difference Vegetation Index Wood fuel World Council for Renewable Energy Acciona Energy Ballast water regulation in the United States Biochar Biogasoline Biomass Fuelled Power Plants Biomass heating systems Biomass Thermal Energy Council Biomass to liquid Biorefinery