| A | B |
|---|
| We should take care of soil because of this. | Soil takes a long time to form. |
| This part of soil has the most living material in it. | The top layer of soil. |
| This soil is gritty and loose. | Sand |
| This soil is smooth and sticky when wet. | Clay |
| Plants cannot get enough air and water in this. | Tightly packed soil |
| Farmers need good topsoil for this. | Better crops |
| Look up Soil Conservation to learn about this. | Soil erosion |
| Add this to soil to make it better. | Nutrients |
| What carries nutrients to plants as it moves through soil. | Water |
| Scientists have helped farmers by changing plants to do what. | Produce more |
