Ключевые слова: air, atmosphere, background, building, business, chemical, chimney, city, climate, cloud, coal, contamination, could, damage, dirty, disaster, ecology, emission, energy, environment, factory, fuel, fumes, gas, gases, global, industrial, industry, landscape, manufacturing, of emissions, oil, petrochemical, petroleum, pipe, plant, polluting, pollution, power, production, refinery, sky, smoke, steam, sunset, technology, the, tower, toxic, warming,