Empoword

Full Citations and Permissions 497 Margerie Glacier Aerial View . National Park Service, U.S. Department of the Interior, https://www.nps.gov/glba/learn/kidsyouth/images/margerie-glacier-aerial- view.jpg?maxwidth=650&autorotate=false. Reproduced from the Public domain as a government document. U-Shaped Valley . National Park Service, U.S. Department of the Interior, https://www.nps.gov/glba/learn/kidsyouth/images/U-Shaped- Valley.jpg?maxwidth=650&autorotate=false. Reproduced from the Public domain as a government document. Tumisu. Interview , 2015. Pixabay, https://pixabay.com/photo-1018333/. Reproduced with attribution under Creative Commons license.