Word Bank:
Alaska resources gold population Hawaii Transcontinental Railroad aqueducts scarcity cities

The West is a diverse region with many natural 12). The completion of the 13) and the discovery of precious metals like 14) brought population growth to the region. However, many parts of the West must deal with water 15) . This affects 16) density, vegetation, and economic activities. In fact, most people in the West live in 17), which often have water brought to them by 18). 19) and 20) have unique challenges of their own due their remote locations.