| A | B |
|---|
| Soil | A material made up of tiny pieces of weathered rock, decomposing plants, and animals |
| Humus | Decaying plant and animal matter in the soil |
| Loam | Soil rich in nutrients that is good for plant growth |
| Nitrogen cycle | The movement of nitrogen between organisms and the environment |
| Decomposers | Organisms that break down dead materials and wastes |
| Bacteria | One celled organisms that help the nitrogen cycle by breaking down materials in soil |
| Texture | How an object feels |
| Composition | The parts that make something up |
