How is the structure of Becoming a National Treasure different from that of Popular Trails at the Grand Canyon National Park? Becoming a National Treasure uses cause and effect to discuss the changes to the park after it became a national park, while Popular Trails at the Grand Canyon National Park uses problem and solution to discuss the improvements made to different trails to make them safer. Becoming a National Treasure uses chronological order to discuss the events that led to the Grand Canyon becoming a national park, while Popular Trails at the Grand Canyon National Park uses compare and contrast to discuss the similarities and differences between two trails. Becoming a National Treasure uses compare and contrast to discuss the different attempts to make the Grand Canyon a national park, while Popular Trails at the Grand Canyon National Park uses chronological order to discuss the opening of each trail and how popular they are. Becoming a National Treasure uses problem and solution to discuss the problems and challenges with making the Grand Canyon a national park, while "Popular Trails at the Grand Canyon" uses compare and contrast to discuss the similarities and differences between two trails.