Ключевые слова: air, air pollution, atmosphere, biodiesel, blue, business, chemical, chimney, cloud, copy space, development, eco, ecology, emissions, energy, engineering, factory, gas, gasoline, generate, global, high, horizontal, industrial, industrial building, industry, manufacture, no people, oil industry, outdoors, petrochemical plant, picturesque, pipe, pollution, power, power supply, powerful, process, product, production, sky, smoke, smoke stack, smokestack, station, steam, technology, tower, tube, warming,