Ключевые слова: air, atmosphere, brazil, carbon, chemical, chimney, city, climate, cloud, clouds, dirty, ecology, energy, environment, environmental, factory, flag, fuel, fumes, gas, global, global warming, hazardous, industrial, industry, manufacturing, nature, night, pipe, pipes, plant, pollution, power, refinery, silhouette, sky, skyline, smog, smoke, steam, sunrise, sunset, technology, thermal, tower, toxic, warming,