Soil

1. types

1.1. The different types of soils are desert soil, tropical soil, forrest soil, and grassland soil.

2. Description

2.1. Color,consistence,texture

3. The layers of soil

3.1. The layers of soil. humus, top soil, sub soil, weathered rock fragments, bed rock

4. what its made of

4.1. soil is made of silt,clay,sand,gravel

4.2. Organic matter

4.2.1. Organic matter is made of matter from dead plants and animals.