Keywords
air pollution, atmosphere, central heating, chimney, city, color image, complex, day, energy, europe, global warming, greenhouse effect, heating, horizontal, industrial complex, industry, morning, outdoor, pixtal, pollution, power, power plant, power station, silhouette, smoke, smokestack, steam, sunrise, sweden, uppsala, vapour, winter, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, we036576