| A | B |
|---|
| Coastal Plains | the subregion with the longest growing season |
| Edwards Aquifer | a natural feature of the Edwards Plateau |
| Mountains and Basins | has the highest point in Texas |
| Mountains and Basins | has a growing season of 220-245 days |
| Mountains and Basins | does not have any subregions |
| Mountains and Basins | has varied landforms, mountains and valleys |
| Central Lowlands and Great Plains | The two US landforms that reach into Texas |
| Physical Geography | relates to the land , climate and landforms |
| Sabine River | Divides Texas from Louisiana |
| Rio Grande River | divides Texas from Mexico |
| Rio Grande River | the longest River in Texas |
| East of the Balcones Escarpment | where most of the largest cities in Texas are located |
| steppe | a vast, treeless plain |
| growing season | the average number of days between the last killing frost of spring and the first killing frost of fall |
| Great Plains | the regions that includes the subregions Llano Basin, Edwards Plateau and the High Plains |
| escarpment | a cliff or abrupt break in the land's surface |
| subregion | a division of a larger geographic region |
| aquifer | an underground layer of porous materials that contains water |
| Coastal Plains | region that contains East Texas, the Gulf Coast, and parts of North and South Texas |
| Amistad Dam | located on the Rio Grande River |
