Ключевые слова: air, atmosphere, bad, blue, business, chemical, chimney, climate, cloud, damage, dioxide, dirty, ecological, ecology, energy, environment, environmental, exhaust, factory, fuel, fumes, gas, global, growth, health, industrial, industry, isolated, manufacturing, oil, ozone, pipe, plant, pollution, power, production, sky, smog, smoke, stack, station, steam, technology, tower, toxic, tube, vapor, warming,