| A | B |
| landform | a feature of the earth's surface |
| elevation | the height of a landform |
| erosion | rain water, ice and other forces wear awas soil and rocks |
| Continental Divide | runs across the top of The Rockie Mountains |
| resource | all of those things that go into making what people need |
| fossil fuel | comes from the decay of living things over a very long period of time |
| mineral | nonrenewable resources that people dig from the earth |
| conservation | careful use and preservation of resources |
| weather | the condition of a layer of air around the earth |
| temperature | a measurement of hotness and coldness |
| precipitation | moisture that coms from clouds |
| climate | the usual weather pattern for an area of the world |