Question

Explain how soil is formed.

Answer 1

• Soil is the thin layer of material covering the earth's surface and is formed from the weathering of rocks. Weathering is a process of physical breakdown and chemical decomposition of rocks and minerals near or at the surface of the earth. This physical and chemical decomposition is primarily done by wind, water, and climate. As a result of these processes, large rock pieces are converted into smaller particles .these small particles mix with humus (organic matter) and form soil. 
• The basic components of soil are minerals, organic matter, water, and air. The typical soil consists of approximately 45% mineral, 5% organic matter, 20-30% water, and 20-30% air.