| A | B |
|---|
| Geography | The study of the earth and the way people live |
| region | a large area that has common features that set it apart from other areas |
| landform | a shape on the earth's surface |
| megalopolis | a group of cities that have grown so close |
| interdependent | depending on each other to meet needs and wants |
| Rocky Mountains | our longest mountain range |
| Continental Divide | an imaginary line that marks where rivers flow to opposite coasts |
| Grand Canyon | large valley carved out of rock by the Colorado River |
| Corn Belt | flat land of the Great Plains where growing corn is important |
| Mississippi River | our largest river |
| Boswash | a name for the northeastern cities that run from Boston to Washington |
| Climate | the weather an area has over a number of years |
| Temperature | measurement of heat or cold |
| Precipitation | the moisture that falls to earth as rain or snow |
| Arid | dry climate |
| Humid | wet climate |
| Natural Resource | Materials found in nature that people use to meet their needs and wants |
| Nonrenewable Resource | Resources that cannot be replaced such as oil |
| Renewable Resource | Resources that can be replaced such as tress and forests |
| Mineral | Substance found in the earth that is neither plant nor animal |
| Fossil Fuels | Formed over millions of years from fossils or remains of ancient plants or animals |
| Environment | All the surroundings in which people |
| Economy | The way people use natural resources |
| Pollution | Harmful chemicals that make our air |
| Acid Rain | Polluted moisture/precipitation that falls to the ground |
| Conservation | Protection and careful use of natural resources |
| Recycling | Using something again |
