| A | B |
|---|
| This is the outer part of the Earth's lithosphere, containing soil | Crust |
| The most essential element to life. | Carbon |
| Process by which plants make their own energy | Photosynthesis |
| These two nutrients cycle throught the soil | Carbon & Nitrogen |
| Smallest of the soil particulates | Clay |
| Floury texture, medium sized particulate | Silt |
| Gritty texture, largest particulate | Sand |
| Horizon C | Parent Material |
| Horizon B | Subsoil |
| Horizon A | Topsoil |
| Horizon O | Organic Material |
| Ideal combination of the three soil particulates | Loam |
| N | Nitrogen |
| N, P, K | The three macronutrients needed by plants for growth, found in soil |
| cropland | agricultural use of soil |
| Football field | non-agricultural use of soil |
