Ключевые слова: background, book, business, cartoon, cognition, concept, day, design, destination, earth, eco, ecology, ecosystem, educated, education, environment, environmental, geographic, geography, global, globe, graphic, holiday, illustration, imagination, intelligence, learn, learning, library, literature, map, page, paper, preservation, protect, read, reading, recycling, save, school, sphere, summer, textbook, threedimensional, tour, transport, travel, vacation, wisdom,