Grand Canyon National Park contains exceptional natural beauty within its boundaries. The park spans geological eras from Precambrian to Cenozoic times and portrays five North American life zones within the canyon walls. It contains over 1,700 plant species, 170 fungi species, and 60 moss species. Threats include invasive species and air pollution, but the National Park Service manages the park, working to preserve the landscape and eradicate threats through techniques like controlled burns.