Ключевые слова: alternative, bulb, concept, creative, earth, eco, ecofriendly, ecological, ecology, electric, electricity, energy, environment, field, friendly, future, generate, generation, glass, green, growth, idea, illuminate, innovation, invention, lamp, light, natural, planet, plant, pollute, pollution, power, protect, renewable, resource, responsibility, reuse, saving, science, solar, solution, sources, symbol, technological, tree, watt,