Biomass

Biomass is anything that is living or recently dead that can be used for industrial production. This can refer to plants or animals grown for fiber, chemicals, or heat, but these days the term is most commonly associated with plants grown to produce biofuel.

When biomass is used as a replacement for fossil fuels it is considered carbon neutral, because while it is alive it converts CO2 into oxygen, but when burned as fuel it puts more CO2 into the air. Biomass can also include organic wastes that can be burned as fuel.