Ключевые слова: alternative, autumn, background, biological, biomass, branch, brown, burn, cast, close, closeup, compressed, consumption, crucible, cylinder, ecologic, ecological, ecology, economy, energy, environmental, fire, fireplace, forest, fuel, green, heap, heat, hot, iron, mass, material, nature, needle, pellet, pellets, pile, pine, power, roll, roller, season, seasonal, stack, stove, texture, timber, winter, wood, wooden,