Three examples of biomass fuels include wood, manure and crops. Certain types of garbage may also be used for biomass fuel.
The term biomass describes a type of organic material that comes from animals and plants. It stores sun energy after it absorbs it via photosynthesis. When animals and people eat the plants, they retrieve the chemical energy. Because people can continue to grow crops and trees, this type of energy is renewable. When someone burns biomass fuel, it creates heat due to the chemical energy. For example, when someone puts wood into a fireplace and lights it, the person is using a form of biomass fuel to warm the home.