Ключевые слова: abstract, air, backdrop, background, black, bw, chemical, chemical fume, chimney, climate, cloud, dark, duct, ecology, emission, environmental, exhaust, factory, flexible, floating, flow, free space, from, fuel, fume, gas, global warming, industrial, nobody, object, pipe, poisonous, pollution, poster, smog, smoke, smoke pollution, spreading, steam, toxic, tube, wallpaper, waste, white,