| A | B |
|---|
| humus | the part of soil made up of dead plants and animals |
| recycle | to break down or change a product and use it to make something new |
| resource | a material that is found in nature and used by living things |
| reusable resources | a resource that can be used again and again |
| pollution | any harmful material in the environment |
| conservation | saving resources by using them wisely |
| reduce | to use less of things |
| Oil is a resouce that is found- | underground |
| nonrenewable resources- | coal, gasoline, and soil |
| renewable resouces- | plants and animals |
| The 3 layers of top soil are- | topsoil, subsoil, and bedrock |
| The top layer of soil is called- | topsoil |
| The middle The middle layer of soil is called- | subsoil |
| The bottom layer of soil is called- | bedrock |
| What caused air and land pollution to get into water? | rain |
| An example of reusing resources is- | Reading books that your older brother or sister has read. |
| What can be made from recycled plastic? | doormats and park benches |
| What is a resource that is mined? | wood |
