Sci 245 Climate Change Proposal

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It is nothing out of the ordinary that the Earth is always changing. It is important to become educated about the Earth’s climate cycles and watch for changes and signs in the Earth’s diverse landscapes because the talk of global warming is inevitable. Here I will discuss desert and glacial landscapes, along with looking at historical and future climate changes. Deserts and glacial landscapes are very much opposites. The desert landscapes are mainly created by wind and sand, but they are defined by the region’s annual rainfall. The landscapes of the desert are composed of sand, alluvial fans, playas, oases, arroyos, as well as deposits of salt. Wind erosion, or eolian, is the type of erosion which is seen in the desert. The direction of the wind is constantly changing and transforming the desert. An example of a feature in a desert landscape that is noticeable would be the dunes. Dunes are hills, or ridges, of sand that are created when the wind blows. There are five different types of these mounds of sand although they are irregular. They are barchans, transverse, star, parabolic, and longitudinal. Desertification, or the movement of desert conditions into non-desert regions like in Northern China, is one way that deserts are formed. With areas like that of Northern China in a delicate balancing act to maintain its ecosystem, even minor stresses by human (anthropogenic) or natural forces can become too much to tolerate, thus a degradation of the land results. Most desert lands aren’t covered by sand. Water erosion is an important geologic process in deserts. Flash floods create deep canyons called arroyos and create depositional landforms such as alluvial fans. This relationship that deserts have with water makes deserts comparable to glacial landscapes because glacial landscapes are mainly formed by water. Advance and retreat is a huge factor in the creation

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