Ключевые слова: alternative, background, bulb, clean, concept, conservation, creative, design, development, earth, eco, ecologic, ecological, ecology, ecosystem, electric, electricity, energy, environment, environmental, generate, global, green, growing, growth, idea, illustration, industry, innovation, lamp, leaf, light, lightbulb, natural, nature, planet, plant, power, realistic, renewable, resource, responsibility, save, soil, solar, solution, sunlight, technological, technology, tree,