4E SS Ch. 9 Matching
| In 1905 a drilling crew found oil near this city in Oklahoma. |
| Today this city is our nation's top oil-refininf center. |
| A chemical made from petroleum |
| Changing in order to survive in a certain environment. |
| A fuel formed underground from dead plants |
| An area of the Great Plains devastated by droughts and dust storms in the 1930's |
| A deep, narrow valley with steep sides |
| The process of water, wind, and ice slowly carrying away rock and soil |
| A factory where crude oil is separated into parts that can be used |
| An aquifer is a source of what? |
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