| A | B |
|---|
| landform | a feature of the earth's surface |
| sea level | the level of the surface of the world's oceans |
| erosion | rainwater,ice and other forces wear away soil and rock |
| continental divide | a line runs along the top of the rockies. Rivers flow into the pacific and atlantic oceans |
| resources | all the things that go into making what people need |
| nonrenewable resources | cannot be replaced,petroleum and minerals |
| renewable resources | can be replaced,trees, wheat, corn |
| flow resources | can only be used where and when they are found-wind, sun and rain |
| conservation | the careful use and protection of resources |
| weather | the condition of a layer of air around the earth |
| temperature | a measurement of hot and cold |
| climate | the usual weather pattern for an area of the world |
| recycling | re-using things that have been thrown away |
| Major landforms of the USA | pacific ranges and valleys,basins and ranges, rocky mountains, great plains, ozark plateau, central plains, coastal plains, appalachian mountains, coastal plains |
