Which region is home to the southern tip of the American Great Plains and the Cross Timbers?

• A. High Plains of Texas
• B. Cross Timbers
• C. Great Plains
• D. Texas Hill Country

Answer: (A)

Think of where different biomes meet. The Cross Timbers sits as a transitional belt between the Great Plains to the west and the forested lands to the east, running through north-central Texas into Oklahoma. That means it contains the southern edge of the American Great Plains while also being the timbered belt known as the Cross Timbers. So this region uniquely hosts both features—the tail end of the plains and the timbered belt right where the plains meet forest.

The High Plains of Texas are the western, more arid part of the Great Plains and don’t include the Cross Timbers. The Texas Hill Country is a south-central Texas landscape that’s distinct from both the plains boundary and the Cross Timbers. The Great Plains as a whole is too broad to pin down this boundary region.