2. Some types of rocks included geyserites which is the most common rock in Yellowstone. The other main rock in Yellowstone is called Travertine. It is rare in Yellowstone but it is in the Mammoth Hot Springs near the entrance of the park. Mammoth Hot Springs's Main ingredient is Travertine.

3. The two biggest environmental issues affecting Yellowstone National Park are fires and wildlife protection. There are pros and cons to forest fires. Forest fires are good for the park because it can help take out all the old trees and grass so that new grass and trees can grow. But when wildfires strike the park, it can destroy animals and be dangerous to the people in the area. It is important to have fires but to keep them controlled and the people and animals safe.

4. Yes, there are many different landforms in Yellowstone National Park. This park has a super volcano and a beautiful caldera (a volcanic crater). The park also has an estimated four thousand fumaroles. A fumarole is an opening in the earth's crust that releases steam and gases. They are often found near volcanoes. Other landforms in Yellowstone National Park include mountains and geysers. All of these landforms make Yellowstone National Park the beautiful park it is today.

5.  History  "Yellowstone National Park." Wikipedia. Wikimedia Foundation, n.d. Web. 15 Nov. 2015.  United States. National Park Service. "History (U.S. National Park Service)." National Parks Service. U.S. Department of the Interior, 14 Nov. 2015. Web. 15 Nov. 2015.  Maps  Carrie. "Yellowstone National Park Map." Flickr. N.p., 1 May 2010. Web. 15 Nov. 2015.  "Yellowstone National Park on US Map." World Easy Guides. N.p., n.d. Web. 15 Nov. 2015.  "Yellowstone Maps." National Park Maps. N.p., n.d. Web. 15 Nov. 2015.  All About YNP  State of the Park: Yellowstone National Park -- National Geographic."National Geographic. N.p., n.d. Web. 20 Nov. 2015.  "Types of Landforms in Yellowstone." Travel Tips. N.p., n.d. Web. 20 Nov. 2015.  "Fumarole." Wikipedia. Wikimedia Foundation, n.d. Web. 27 Nov. 2015.  "YELLOWSTONE TREASURES." The Yellowstone Rock Factory. N.p., n.d. Web.  USGS: Volcano Hazards Program - Yellowstone Monitoring: Satellite Technologies Detect Uplift in the Yellowstone Caldera - 2006 Article." USGS: Volcano Hazards Program - Yellowstone Monitoring: Satellite Technologies Detect Uplift in the Yellowstone Caldera - 2006 Article. N.p., n.d. Web. 11 Dec. 2015.