Keywords
alternative energy, black background, bulb, close-up, color, covering, electricity, energy conservation, energy efficient, energy efficient light bulb, environment, environmental awareness, environmental conservation, environmental issues, front view, fuel and power, full length, grass, green, ideas, ideas and concepts, light bulb, no people, out of context, photography, selective focus, series, single object, studio shot, unknown, vertical, 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, 1014048