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4-1
Physical Features of the United States and Canada
| Term | Definition |
|---|---|
| contiguous | joined together inside a common boundary |
| megalopolis | huge urban area made up of several large cities and nearby communities |
| prairie | rolling inland grassland region with fertile soil |
| cordillera | region of parallel mountain chains |
| canyon | deep valleys with steep sides |
| navigable | referring to a body of water wide and deep enough for ships to use |
| glacier | giant sheets of ice |
| divide | the high point in a landmass that determines the direction rivers flow |
| constrain | limit |
| route | a journey |