Ключевые слова: air, blue, carbon, chemical, chimney, climate, cloud, coal, construction, damage, dioxide, dirty, ecology, energy, environment, environmental, exhaust, factory, fog, fuel, fumes, gas, generation, global, heat, industrial, industry, inhaling, manufacturing, ozone, pipe, plant, poison, pollution, refinery, sky, smog, smoke, stack, station, steam, substance, technology, tower, toxic, vapor, warming, water, white,