| A | B |
|---|
| geography | the study of Earth and all the different kinds of things on it. |
| landforms | the shapes that make up Earth's surface |
| plain | a large area of nearly flat land |
| plateau | a high, flat area that rises steeply above the surrounding land |
| basin | a low, bowl-shaped landform surrounded by higher land |
| coast | the land along an ocean |
| Coastal Plain | a narrow, flat strip along the Atlantic Ocean |
| Interior Plains | The wide plains stretch for hundreds of miles between two of our great mountain ranges |
| Mississippi River | One of the longest rivers in North America |
| Rocky Mountains | These mountains stretch through the western U.S. |
| desert | a place where very little rain falls |
| environment | the surroundings in which people, plants, or animals lives |
| climate | a pattern of weather over many years |
| temperature | a measure of how hot or cold the air is |
| precipitation | the moisture that falls to the ground |
| natural resource | something in the environment that people can use |
| conservation | the careful use of our natural resources |
| recycled | to use something again |
| renewable resources | These resources can be replaced. |
| pollution | this is what makes our air, water, or soil dry |
| nonrenewable | resources with a limited supply |
| minerals | a natural substance that is found in the earth such as iron, silver, and copper |
| fuels | nonrenewable resources used to make heat or energy |
| border | a line people agree on to separate two places |
| canal | a waterway dug across the land |
