| Vocabulary | Defintions |
| natural resources | any of the useful minerals and other materials that people take frome the Earth |
| norenewable resource | a reasource that cannot be readily replacedonce it is used |
| renewable resource | a reasource that is replaced as it is used |
| inexhaustible resource | natural cycles renew the Earth's renewable resource |
| fossil fuels | fuels formed from the remains of once- living organisms |
| natural gas | (blank) |
| reusable resource | a natural resource that is renewed by natural cycles and can be used more than once; an inexhaustible resource |
| recycling | the process of taking a resource from a product and making it into a new product |
