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