Ключевые слова: air, atmosphere, blue, chimney, climate, cloud, coal, contamination, damage, dirty, ecological, ecology, emissions, energy, environment, environmental, factory, fuel, fumes, gas, global, industrial, industry, manufacturing, nature, orange, pipe, plant, pollution, power, production, sky, smog, smoke, smokestack, stack, station, steam, sun, sunset, technology, tower, toxic, vapor, warm, warming, white, yellow,