Ключевые слова: bulb, concept, conceptual, dirt, earth, eco, ecofriendly, ecological, ecology, electricity, energy, environment, environmental, equipment, future, global, green, grow, idea, ideas, illustration, innovation, invention, isolated, kyoto, lamp, leaf, light, lightbulb, planet, plant, pollution, power, protection, renewable, resource, reuse, savings, soil, solar, solution, sprout, sunlight, sustainability, sustainable, symbol, technology, tree, warming,