Ключевые слова: abstract, abundance, ash, background, black, burning, carbon, charcoal, coal, cube, dark, dirty, ecology, effect, energy, environment, extract, fireplace, flame, fossil, fuel, gas, geology, grill, heat, hot, industrial, lignite, manufacturing, material, metallurgical, mineral, nature, power, prices, production, raw, resource, rock, rough, shiny, smoke, solid, space, stone, stove, texture, wealth, wood, worker,