Ключевые слова: alternative, background, bag, bio, biological, burn, closeup, compressed, eco, ecofriendly, ecological, ecology, energy, environment, fiery, fire, fireplace, firewood, flammable, friendly, fuel, heat, heating, logs, many, material, natural, nature, nobody, object, pellet, pellets, power, recycling, renewable, resources, rustic, sack, saving, sustainability, table, warm, winter, wood, wooden,