Ключевые слова: air, atmosphere, blue, chemical, chimney, climate, cloud, cloudscape, cloudy, co2, damage, danger, dioxide, dirty, ecology, energy, environment, environmental, factory, fog, fumes, gas, global, industrial, industry, manufacturing, nature, outdoor, ozone, pipe, plant, pollution, power, sky, smog, smoke, station, steam, technology, tower, toxic, warming, white,