Ключевые слова: backgrounds, bright, bulb, closeup, color, conservation, creativity, electric, electricity, environment, environmental, equipment, fire, forest, fuel, generation, glass, glowing, green, growing, growth, heat, ideas, illuminated, innovation, lamp, leaf, light, lighting, line, lit, material, natural phenomenon, nature, object, outdoors, plant, power, shiny, single, small, supply, symbol, technology, temperature, tree, up, yellow,