| A | B |
|---|
| What is the dominant landform of the Great Plains region? | Great Plains-are mostly flat but rise gradually from east to west |
| What is the dominant climate of the Great Plains? | semiarid steppe with extreme temperatures, cold winters, hot summers |
| What economic activites take place in the Great Plains? | raise livestock, wheat-corn farming, strip mining |
| How has the environment been modified? | natural grasses replaced by wheat-other crops, construction of fences, dams, wells, irrigation systems |
| How does international concerns play a role in the Great Plains? | how much wheat will be exported, world markets |
| Why do the Rockies have several vegetation zones? | because different elevations have different climates |
| What are the differing vegetation zones of the Rockies? | semiarid grasslands at foot of mountain, forested mountain slopes, turndra above treeline |
| Why has mining activity decreased in region? | depletion of mineras such as gold and silver |
| What is the region's most valuable economic activities today? | tourism |
| What might happen to the Rockies if government sold lands there? | increased development |
| How is agriculture in the Rocky Mountains possible? | irrigation by constructing dams and aqueduct system |
| Why does the Great Plains appear to be a series of green circles? | because of pivot irrigation |
| What environmental concerns fo the Great Plains and Rockies share? | droughts, water shortages, effects of mining, air pollution |
