What major feature do the Cross Timbers represent in North America?

The Cross Timbers represent an ecological transition zone in North America, marking the boundary between two distinct ecosystems: the grasslands of the Great Plains to the west and the forests of the eastern regions. This area is characterized by a mix of open woodlands and savanna-like environments, which houses a diverse range of plant and animal species. The shift in vegetation types found within the Cross Timbers highlights the varying climatic and geographical influences that shape the natural landscape across this part of the continent. Understanding this ecological transition zone is important in studies of biodiversity and the environmental changes that occur between different habitats.