| A | B |
|---|
| glacier | thick sheet of ice that moves slowly across land |
| precipitation | rain and snow |
| erosion | process by which rain, wind, and rivers wear away stone and soil |
| river system | network of rivers and their tributaries |
| weather | state of the atmosphere near Earth at a given time and place |
| landforms | features of Earth's surface, such as mountains and valleys |
| vegetation | trees, shrubs, grasses, and other plants |
| climate | typical weather in a region over a long period of time |
| economy | how resources are used to provide goods and services |
| vegetation zone | area or region that similar climate and geography |
| North American natural resources | minerals, coal, oil, lumber, water, and fertile soil |
| Barriers in North America | rivers, mountains, oceans, ravines |
| Atlantic Coastal Plain | farmland, swamps, wetlands |
| Appalachian Mountains | Forest - covered, old so they are weathered and word down |
| Central Lowlands | rich soil, many farms |
| Great Plains | grasslands, crops, cattle |
| Rocky Mountains and coastal ranges | North Americas highest mountains, heavily forested |
| Intermountain region | dry, plateaus, basins, and deserts, Grand Canyon |
| Canadian Shield | NW hills and lakes, NE high mountains, South forest covered, many minerals |
| Polar and Tundra | Canada/Alaska, cool summers wet cold winters, frozen ground not much grows |
| Forest | Most Canada and NW, NE, SE US - mild to cold, average rain, forested areas...evergreens |
| Rain Forest | Pacific Coast, moderate temp, rain 167 inches, lots of trees, bushes moss and lichen |
| Grassland | Center of NA, Mississippi Valley, E- 30 inches of rain W- 15 inches |
| Desert | SW US, hot dry, hardy shrubs, cacti |
