Ключевые слова: against, air, atmosphere, background, blue, chemical, chimney, clear, climate, cloud, coal, construction, contamination, day, dioxide, dirty, ecology, electricity industry, energy, environment, environmental, exhaust, factory, fuel, gas, global, high, industrial, industry, manufacturing, nature, pipe, plant, pollution, power, red, sky, smog, smoke, stack, station, steam, technology, thermal, thermal power plant, tower, toxic, vapor, warming, white,