Ключевые слова: agriculture, background, bulb, care, concept, conservation, day, development, earth, eco, ecology, economical, electric, electricity, energy, environment, environmental, forest, future, global, green, growth, hand, holding, icon, industry, innovation, inspiration, leaf, light, light bulb, lightbulb, natural, nature, outdoor, people, planet, plant, pollution, power, protect, protection, recycle, renewable, saving, science, social, sustainability, symbol, technology,