Today my family and I went to the Grand Canyon and it was really snowy and cold. At the visitor center there was a lot of snow on the roofs of the buildings and it would occasionally fall off. While we were there we walked along the rim of the canyon and it was scary because it was slippery. We were at 6860 feet and the bottom of the canyon was around 2500 feet, so that's a pretty far drop.
If we had been here around six million years ago we could have walked from rim to rim. The reason why you cant walk rim to rim anymore is because the Colorado river eroded it into a canyon. Each year the canyon continues to erode about the thickness of a piece of paper.
Since there is so much elevation change there are a lot of different habitats. The main habitats are forest on the rim, desert in the canyon, and river at the bottom. We were at the forest on the rim and while walking there we saw some birds, deer, and Ponderosa pine. Down in the desert you would probably find rattle snakes, lizards, and prickly pear cactus. In the river at the bottom you would see humpback chub, beavers, and great blue herons.