Ключевые слова: bulb, concept, dirt, earth, echo, ecology, electricity, energy, environment, environmental, equipment, fertilization, fertilize, flower, global, green, grow, growth, idea, ideas, illustration, innovation, inside, isolated, kyoto, lamp, leaf, light, lightbulb, natures, plant, pollution, power, protection, recycling, renewable, resource, savings, seed, seedling, small, soil, solution, sprout, supply, sustainable, symbol, technology, tree, warming,