Soil

1. discrption

1.1. texture

1.1.1. how it feels

1.2. O horizon

1.2.1. its made up for living like leaves plants,

1.2.2. its very dark

2. layers

2.1. bedrock

2.2. subsoil

2.3. topsoil

2.4. organic layers

2.5. parent matrial

3. types

3.1. Grassland

3.2. Forest

3.3. Desert

3.4. Tropical grassland

3.5. rocks

3.6. soil

3.7. sand

3.8. silt

3.9. clay

4. is made of

4.1. weathered rocks

4.2. organic matter

4.3. rocks

4.4. minreals

4.5. air

4.6. water