Fill in the Blanks La.'s 5 Natural RegionsOnline version describe the natural regions' characteristics by Vicki Passman 1 marsh Hills River Floodplain River Mississippi terrace Red marsh River Valley Red Hills Valley Migratory birds travel to the region each year to feed on the grasses . . The region was once covered in flowers and grass . The soil in the region is red and alluvial . The region contains Mount Driskill , Louisiana's highest point The region contains Louisiana's salt domes . The salt content of the region is high due to salt domes in Texas and Oklahoma . The region has alluvial soil good for farming . The soil in the Region is old and not fertile far farming .
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