Ключевые слова: air, ascend, atmosphere, backlight, belch, blue, carbon dioxide, chemical, chimney, civilization, climate, clouds, co2, coal, conservation, contamination, damage, danger, daylight, dense, detail, dirty, dust, eco, ecology, ecosystem, emissions, environment, environmental, exhaust, factory, fly ash, fossil, fuel, fume, global warming, gray, greenhouse gas, grey, heating, heaven, industrial, industry, infrastructure, manufacture, no people, nopeople, outdoor, ozone, pipe, plant, pollution, power, power plant, red, scene, sidelight, sky, skyline, smog, smoke, smokestack, spout, sunlight, sunny, sunshine, technology, toxic, urban, white, wind,