Which two mountain regions have fertile land suitable for farming? Appalachian Plateau and Piedmont
Blue Ridge and Ridge and Valley
Piedmont and Blue Ridge
Appalachian Plateau and Ridge and Valley

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

Which volcanic eruption caused the most deaths

Which of the following best describes asbestosis?