Ключевые слова: air, air pollution, atmosphere, blue, carbon dioxide, chemical, chemical emissions, chimney, co2, coal, damage, dioxide, dirty, ecology, electricity, emission, emissions, energy, environmental, exhalation, exhaust, factory, fallow, flue, fuel, fume, fumes, gas, greenhouse, industrial, industry, manufacturing, pipe, poison, pollution, power, sky, smog, smoke, smokestack, station, steam, stove pipe, technology, tower, toxic, toxic cloud, vapor, warming,