Biomass is renewable natural material that comes from plants and animals. Biomass could be burned straight for heat or transformed to liquid and gaseous fuels through various processes. pure - freed from extraneous features of any sort; "pure air and drinking water"; "pure gold"; "pure primary colors"; "the violin's pure https://franciscogynak.mpeblog.com/68123997/indicators-on-biofuel-burner-you-should-know