Ключевые слова: abstract, agriculture, art, biology, brain, bulb, business, clever, concept, creativity, eco, ecology, education, electricity, energy, environment, green, growth, hand, icons, idea, illustration, industrial, innovation, inspiration, intelligence, invention, knowledge, leaf, learning, lightbulb, mind, natural, nature, objects, plant, power, save, science, seed, seedling, sign, success, symbol, technology, thinking, tree,