Ключевые слова: acid, air, asthmatic, atmosphere, breathe, changing, chimney, climate, cloud, coal, damage, deleterious, demolish, dioxide, dirty, ecological, ecologically, ecology, emissions, exhaust, factory, fuel, fumes, gas, global, growth, harmful, health, industrial, industry, intoxication, noxious, ozone, pipe, poison, poisoning, pollution, power, precipitation, sky, smog, smoke, stack, station, steam, substance, tower, toxic, warming, white,