Ключевые слова: backgrounds, building exterior, built structure, carbon, chemical, chimney, city, concepts, dusk, earth, economy, electricity, energy, engineering, environment, environmental, factory, fiery, finance, fuel and power generation, future, gas, globe, horizontal, illustration, impact, industrial, industry, information, manufacturing, map, marketing, no people, oil, outdoors, pipe, plant, pollution, power, refinery, silhouette, sky, smog, smoke, social issues, sun, sunrise, sunset, tower,