1. Types
1.1. Desert
1.1.1. Examples of places: New Mexico, Nevada, and Arizona
1.2. Forest
1.2.1. Examples of places: Indiana, Ohio, Florida, and North Carolina
1.3. Grassland
1.3.1. Examples of places: North Dakota and South Dakota
1.4. Tropical Grassland
1.4.1. Examples of places: South side of California
2. Descripitions
2.1. Color
2.1.1. Brown
2.1.2. Red
2.1.3. Grayish
2.2. Consistence
2.2.1. Loose
2.2.2. Firm
2.2.3. Friable
2.3. Texture
2.3.1. Grainy
2.3.2. Silky
2.3.3. Sticky
3. Is made of
3.1. Weathered Rock
3.1.1. Sand
3.1.2. Silt
3.1.3. Clay
3.2. Organic Matter
3.2.1. is made from plants, animals, and their waste.
3.2.2. is made of different nutrients such as nitrogen, phosphors, and potassium.
4. Layers
4.1. Topsoil
4.1.1. is a combination of rock, sand, silt, organic matter, air, and water. Plants grow roots in this layer, which is rich with biological activity. Topsoil is about 20 cm. deep, but it may be thinner or thicker depending on the location.
4.2. Subsoil
4.2.1. contains some of the chemicals found in topsoil as water drips from the soil above and washes these nutrients down. There is not much organic material in this layer.
4.3. Parent Material
4.3.1. is made up of slightly broken up bedrock. Plant roots usually do not penetrate into this layer. Very little organic matter is found here.
4.4. Bedrock
4.4.1. is hard rock that lies beneath all the soil layers.