Ключевые слова: air, air pollution, atmosphere, chemicals, chimney, city, climate, concept, contamination, damage, danger, dangerous, dirty, ecology, effect, energy, environment, environmental, exhaust, factory, fog, foggy, future, gas, global, heat station, industrial, industry, manufacturing, misty, nature, ozone, petrol, pipe, pollute, polluted, pollution, refinery, smog, smoke, technology, temperature, tower, toxic, warming, waste, working factory,