Ключевые слова: agriculture, alternative, background, bulb, care, concept, conservation, creative, day, development, earth, eco, ecology, ecosystem, electric, electricity, energy, environment, environmental, future, glass, global, green, grow, growth, idea, innovation, lamp, leaf, life, light, lightbulb, natural, nature, planet, plant, power, protection, recycle, renewable, resource, responsibility, save, seedling, soil, solar, solution, sprout, sustainability, sustainable, symbol, technology, warming,