1. Minerals: Minerals are the inorganic material that makes up soil, and they are derived from the rocks and minerals in the surrounding area. The most common minerals in soil are quartz, feldspar, and clay minerals.

2. Organic matter: Organic matter is the remains of plants and animals that have died in the soil. Organic matter is important because it provides nutrients for plants, improves soil structure, and helps to retain moisture.

3. Water: Water is an essential component of soil, and it is necessary for the growth of plants. Water also helps to transport nutrients and oxygen throughout the soil.

4. Air: Air is also essential for the growth of plants, and it provides the oxygen that plants need to breathe. Air also helps to regulate the temperature and moisture content of soil.

5. Microorganisms: Microorganisms are the living organisms that live in soil, and they include bacteria, fungi, actinomycetes, protozoa, and nematodes. Microorganisms play a vital role in soil fertility, decomposition, and nutrient cycling.