is the organic non-fossil
material of biological
origin, collectively. For example, plants
) and animals
are biomass, as are materials they produce, such as animal droppings and wood. Biomass is sometimes burned as fuel for cooking
and to produce electricity
and heat. Biomass used as fuel often consists of underutilized types, like chaff and animal waste.
In some industrialized countries, like Germany, paradoxically, food is cheaper than fuel compared by price per joule. Someone demonstrated a central heating unit supplied by food grade wheat.
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