Pengarang: Claire O. Neal

·Reading Level: Grades 4-6 ·Features historical information about the Grand Canyon, how it was formed and what the layers of dirt mean in the earth’s geological history ·Includes information on i …

·Reading Level: Grades 4-6 ·Features information about boiling hot springs, spouting geysers, and bubbling mud volcanoes-all of which and more are found at Yellowstone National Park. ·Also includ …