Ключевые слова: alternative, background, bulb, clean, concept, conservation, creative, design, development, earth, eco, ecological, ecology, electric, electricity, energy, environment, environmental, generation, generator, global, globe, green, house, icon, idea, illustration, industry, innovation, lamp, leaf, light, mill, nature, planet, plant, power, recycling, renewable, resource, sign, station, sustainable, symbol, technology, turbine, water, wind, windmill,