Ключевые слова: april, architecture, atmosphere, background, bio, blue, care, concept, construction, creative, day, design, earth, eco, ecological, ecosystem, energy, environment, environmental, future, global, globe, green, home, house, human, idea, innovation, inscription, international, land, leaves, model, nature, paper, planet, plant, preservation, property, protection, recycling, renovation, residence, reusing, save, spring, symbol, tree, word, worldwide,