Ключевые слова: air, atmosphere, breathe, carbon, chemical, chimney, climate, co2, coal, conditions, construction, contamination, danger, dioxide, dirty, ecological, effect, emission, energy, environment, environmental, exhaust, factory, fume, garbage, gas, global, growth, harmful, industrial, industry, ozone, pipe, plant, pollute, pollution, power, production, refinery, sky, smog, smoke, stack, station, steam, tower, toxic, vapor, warming, white,