Soil Layers and How Soil Forms

Soil supplies plants with water and inorganic minerals. It is the natural medium for land plants, and its quality depends on both chemical makeup and living organisms in the soil. Healthy soil contains enough air, water, minerals, and organic matter to support plant growth.

Soil is made of three ...

Soil, often called the skin of Earth, is more than just dirt. It is a complex ecosystem that includes abiotic factors such as inorganic minerals, air, and water. It also contains many biotic factors, such as bacteria, fungi, and other organisms.

The inorganic minerals constitute 40 to 45% of soil volume and enrich the ecosystem with nutr...