Ключевые слова: alternative, background, bio, biological, biomass, branch, brown, burn, compressed, consumption, crucible, ecological, ecology, economy, energy, environment, environmental, fire, fireplace, firewood, forest, fuel, granule, green, hardwood, heap, heat, isolated, mass, material, natural, nature, organic, oven, pellet, pile, pine, power, recycling, roll, season, stack, stove, timber, white, winter, wood, wooden,