| A | B |
|---|
| where the climate varies most in the US | western US |
| landforms | physical features on Earth's surface such as plains, valleys or mountains |
| Rio Grande | forms part of the border between the US and Mexico |
| tributary and drainage basin | terms that are used to refer to rivers |
| interior plains | plains that extend across most of the center of the US |
| forest, grassland, desert and tundra | vegetation regions that cover most of the US |
| land form and climate | factors that influence land use |
| where most large cities in the US are built | near water or on major transportation routes |
| renewable resources | things that can soon be made again by nature or by people |
| irrigation | the use of canals, ditches, or pipes to bring water to dry areas |
| mountain range | a group of connected mountains |
| tides | the regular rise and fall of the ocean and bodies of water connected to it |
| vegetation | plant life that grows naturally in a place |
| metropolitan area | a large city and its surrounding suburbs |
