wood pellets and money, dollars. the concept of savings when using biofuels from wood chips .the cat litter

alternative and ardent background biofuel biofuels biological biomass boiler burn cat central chips concept conservation dollars domestic eco ecofriendly ecological ecology economy efficiency energy environment environmental fire firewood flame friendly from grain green heap hot house litter mass material money natural nature pellets pine plate power renewable savings sawdust source stove straw temperature timber using view warm waste when winter wood wooden