Ключевые слова: air, atmosphere, background, blue, carbon, chemical, chimney, climate, cloud, co2, coal, companies, condensation, damage, day, dioxide, dirty, emission, emissions, energy, environment, environmental, exhaust, factory, gas, industrial, industry, manufacturing, nature, pipe, plant, pollute, pollution, power, sky, smog, smoke, smokestack, smokestacks, stack, station, steam, sun, technology, tower, toxic, vapor, warming, waste, white,