Soil

1. is made of

1.1. Weathered Rocks

1.1.1. Clay

1.1.1.1. Silt

1.1.1.1.1. Sand

1.2. Organic Matter

1.2.1. Decomposed Plant Life

1.2.1.1. Twigs

1.2.1.1.1. Decomposed Animals

1.2.2. Nutrients

2. Layers

2.1. Top Soil

2.1.1. Sub Soil

2.1.1.1. Parent Material

2.1.1.1.1. Bedrock

3. Types

3.1. Healthy Soil

3.1.1. Sandy Soil

3.1.1.1. Clay Soil

4. Descriptions

4.1. Sticky

4.1.1. Rocky

4.1.1.1. Slightly Sandy

4.1.1.1.1. dark brown