About the Grand Canyon
The Grand Canyon offers great biological diversity that can be attributed to the presence of five of the seven life zones and three of the four desert types in North America.
The five life zones represented are the Lower Sonoran, Upper Sonoran, Transition, Canadian, and Hudsonian.
This is equivalent to traveling from Mexico to Canada. The Park also serves as an ecological refuge, with undisturbed remnants of dwindling ecosystems (such as boreal forest and desert riparian communities). It is home to numerous rare, endemic (found only at Grand Canyon), and specially protected (threatened or endangered) plant and animal species.