Ключевые слова: apple, backgrounds, blank, book, business, collection, colors, communications, concepts, data, diary, documents, eating, education, expertise, food, fruits, healthy, image, information, leaf, learning, library, literature, materials, medium, nature, objects, office, old, open, organic, pages, paper, publications, reading, red, reports, research, school, single, space, stack, text, textbook, vegetables, vegetarian, white, wisdom, writing,