What three components make up soil?

• A. Solids, water, air
• B. Minerals, nutrients, air
• C. Sand, silt, clay
• D. Water, minerals, gases

Answer: (A)

The three fundamental components that make up soil are solids, water, and air. Solids in the soil consist primarily of mineral particles (like sand, silt, and clay), organic matter, and living organisms. Water is essential for transporting nutrients, facilitating biological processes, and supporting vegetation. Air fills the spaces between soil particles and is crucial for the respiration of plant roots and soil organisms.

This composition highlights the multifunctional nature of soil as it provides the structural framework for plants, retains moisture, and houses biological activity. While other options mention relevant components, they either focus on specific types of soil particles or omit key aspects of the soil environment, such as the essential roles of water and air in maintaining soil health and fertility.