| A | B |
|---|
| loam | soil that is a mixture of humus, sand, silt, and clay |
| sand | soil with grains of rock that you can see with your eyes |
| renewable resources | a resource that can be replaced during a human life |
| silt | soil with grains of rock that are too small to see with your eyes |
| nonrenewable resource | a resource that cannot be replaced during a human lifetime |
| reduce | to use less of a resource |
| pollution | any harmful material in the environment |
| recycle | to use a resource by breaking it down and making a new product |
| reuse | to use again |
| resource | a material that is found in nature and that is used by living things |
