Here are the correct matches for each term with its description:
- Mexico: one of only 17 countries recognized as a mega diverse
- Great Lakes: you'll find nearly 20% of the world's fresh surface water here.
- Rio Grande: stretches of it act as a natural border between the U.S. and Mexico
- Cascade Range: location of Mount St. Helens
- Neartic: North America and Canada make up this ecoregion
- Isthmus of Panama: narrow curve of land that connects north and south America
- Guatemala: central American country that runs parallel to the Cocos Ocean Plate
- Lake Erie: this body of water is a natural border between the U.S. and Canada
The responses related to endemic species in Sierra Gorda don't have corresponding terms in your list, but they would typically pertain to wildlife or plants found in that region.