The three physiographic subregions that make up MexAmerica are ...

[jjjetplane]

The three physiographic subregions that make up MexAmerica are the Basin and Range, the Gulf Coastal Plain and what?
 
  A) The Rocky Mountains
  B) The Great Plains
  C) The Sierra Nevada Mountains
  D) The Navaho Basin

Question 2

The physical geography of parts of New Mexico and West Texas, including Big Bend National Park are an extension of what?
 
  A) The Great Plains
  B) The Gulf Coastal Plain
  C) The Rocky Mountains
  D) The Intermontane

[britb2u]

Answer to Question 1

A

Answer to Question 2

C

[jjjetplane]

TY

[britb2u]

You're welcome