Soil are compound mixtures found at the upper most layer of the surface of the Earth. It is mostly loose materials that are composed of rock, minerals, water, and decaying plant and animal matter. Soil has all the nutrients and raw materials needed for the growth of plant life. Plants are vital for the continuation of life on Earth; hence soil is an essential material for life as well. Soil provides shelter for many different animals as dig into it and use it for their needs. Soil also has a natural capacity to filer and clean water which is a crucial compound for life.
Soil is composed of five distinctive layers. The topmost layer is composed of the remains of leaves and twigs. This organic material provides plenty of nutrients for plants. Just below that layer is topsoil which is where a variety of minerals are located. Subsoil is found beneath topsoil which is mostly clay and minerals. Large rocks are found beneath the subsoil they provide a foundation for all layers that sit on top of it. The primary foundation is located below this and is called the bedrock.