Soil

1. Layers

1.1. Humus Layer

1.1.1. Organic matter

1.2. sperficial soil

1.2.1. Less organic material

1.3. fragmented

1.3.1. More rock found in soil

1.4. Parent Rock

1.4.1. Soilid rock

2. desriptions

2.1. Grass

2.2. Soil

2.3. Rock

2.4. Porent Rock

3. Is made of

4. wethered rocks

4.1. sand

4.2. clay

4.3. silt

5. definition

5.1. The upper layer of earth in which plants grow, mixture of organic remains, clay, and rock particles.

6. Types

6.1. Gellisols

6.1.1. Frozen

6.2. Histsols

6.2.1. Organic , Wet

6.3. Oxisols

6.3.1. Very Weathered

6.4. Ultisols

6.4.1. Weathered

7. Nutrients

7.1. compounds

7.1.1. amino acids

7.1.1.1. Inorganic chemical

7.1.1.1.1. oxygen