Ключевые слова: abstract, bio, biology, brain, building, butterfly, car, city, clean, concept, conservation, creative, design, earth, eco, ecologic, ecological, ecology, ecosystem, energy, environment, environmental, environmentally, friendly, globe, go, green, happy, idea, leaf, natural, nature, planet, power, recycle, reduce, responsibility, reuse, save, sign, stalk, symbol, think, together, tree, turbine, urban, wind, world,