| A | B |
|---|
| 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 valley with steep sides |
| navigable | body of water wide and deep enough for ships to use |
| glacier | giant sheet of ice |
| divide | high point in a landmass that determines the direction rivers flow |
| drought | long period of time without rainfall |
| tornado | severe windstorm that takes the form of a funnel-shaped cloud and often touches the ground |
| hurricane | wind system that forms over the ocean in tropical areas and brings violent storms with heavy rains |
| blizzard | severe winter storm that combines high winds and heavy snow |
