Biomass refers to any materials that comes from residing matters, which includes wood and bark from trees, leaves or stems from plants, and perhaps animal manure. From Spring 2015, any biomass homeowners—regardless of whether domestic or business—will have to purchase their fuels from BSL (Biomass Suppliers Listing) authorised suppliers so https://beautvxyy.elbloglibre.com/38392234/biofuel-examples-no-further-a-mystery