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21 June, 22:08

Read about Weathering and Erosion in Texas to answer the following question.

How do the processes of weathering, erosion, and deposition affect the ecoregions of Texas? Give a specific example of how each process affects a particular ecoregion.

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  1. 21 June, 22:19
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    Weathering, erosion, and deposition shape the topography and soil characteristics of Earth's surface. For example, in Texas, these processes have formed a variety of landforms (beaches, plateaus, mountains, and canyons) as well as soil types (fertile soil, clay rich soil, and sandy soil). The combination of topography, soil, and climatic (precipitation and temperature) conditions in an area determines the types of ecosystems the area can support; this is critical to defining ecoregions. In Texas, there are ten different ecoregions including: 1) East Texas Pineywoods, 2) Gulf Coast Prairies and Marshes, 3) Oak Woods and Prairies, 4) Blackland Prairie, 5) Crosstimbers and Prairies, 6) Rolling Plains, 7) High Plains, 8) Trans-Pecos, 9) South Texas Plains (Brush Country), and 10) Edwards Plateau. (Also Llano Uplift which can be included with Edwards Plateau.) These ecoregions are named after the major ecosystem types (for example, East Texas Pineywoods) or topographical features (for example, Edwards Plateau) present in their areas. Each of these ecoregions is impacted differently by weathering, erosion, and deposition. Water is an agent of weathering and erosion. Generally, the precipitation trend goes from wet to dry when moving from the east part of Texas to the west part. Starting in the east, and moving west are the ecoregions of East Texas Pineywoods and Gulf Coast Prairies and Marshes, and then moving generally to the west are the Oak Woods and Prairies, Blackland Prairie, Crosstimbers and Prairies, South Texas Plains (Brush Country), Edwards Plateau, Rolling Plains, High Plains, and ending in the far west is the Trans-Pecos ecoregion.
  2. 21 June, 22:23
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    Deposition after the weathering and erosion of the Guadalupe and Davis Mountains has formed the soil in this ecoregion. When this ecoregion does receive rain, it can lead to flashfloods, which can weather and erode the rocks and sediment. The southern most ecoregion in Texas is the South Texas Plains
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