Ключевые слова: air, area, atmosphere, business, carbon, chemical, chemistry, chimney, climate, conservation, construction, contamination, damage, dirty, dramatic, ecology, energy, environment, environmental, evening, factory, fume, gas, generate, global, industrial, industry, manufacturing, metal, oil, pipe, plant, pollution, power, production, refinery, sky, skyline, smog, smoke, smokestack, stack, steam, steel, storage, technology, tower, toxic, tube, warming,