| A | B |
|---|
| history | The study of the past events and people. |
| geography | The study of the earth and how people use it. |
| metropolitan areas | An area made up of a large city or several large cities and the surrounding towns,cities,and other communities. |
| natural resource | Things such as coal,water,or farmable land that are provided by nature and are useful to people. |
| region | An area with one or more common characteristics that make it different from surrounding areas. |
| climate | The pattern of the weather that a place has over a period of years. |
| plain | A wide area of flat or gently rolling land. |
| elevation | The height of land above sea level. |
| sediment | Matter that settles to the bottom of a liquid . |
| national park | An area of scenic beauty maintained by the federal government for the public to visit. |
| basin | A wide,deep area bounded by higher elevations |
| conservation | The care,protection,or management of natural resources. |
| nonrenewable resource | A resource of which there is a limited supply. |
| fossil fuel | A nonrenewable energy source found underground. |
| interstate highway | One of the network of highways connecting the regions of the United States |
| ecosystem | A group of plants and animals and their environment. |
| geyser | A hot spring that shoots steam. |
