Ключевые слова: bulb, butterfly, concept, dirt, eco, ecology, electricity, energy, environment, environmental, equipment, fertilization, fertilize, flower, friendly, global, green, grow, growth, ideas, innovation, inside, kyoto, lamp, leaf, light, lightbulb, nature, plant, pollution, power, protection, recycling, renewable, resource, savings, seed, seedling, solution, sprout, supply, sustainable, symbol, technology, tree, warming, water, yellow,