Ключевые слова: air, atmosphere, atmospheric, carbon, change, chimney, climate, clouds, concept, conservation, dusk, earth, ecology, emission, emissions, energy, environment, environmental, factory, fuel, global, gradient, gray, haze, horizon, impact, industrial, industrialization, industry, landscape, light, nature, overcast, pastel, plant, pollution, power, quality, releasing, sky, smog, smoke, smokestacks, sunset, urban, warming,