Soil porosity is directly related to the ?

• A. Elevation
• B. PH Level
• C. Soil Particle Size
• D. Mineral Content

Answer: (C)

Porosity is the amount of pore space in soil that can hold air and water, and it is driven by how large the soil particles are and how they fit together. Coarser soils with larger particles have bigger gaps between grains, creating more pore space and higher porosity (though they may drain quickly). Finer soils with very small particles have many tight contacts and much less total pore space, though they can hold onto water longer. Elevation, pH level, and mineral content influence other soil properties, but they don’t determine how much pore space the soil has. Understanding porosity helps explain drainage, aeration, and how easily roots can grow through the soil. So, the direct relationship is with soil particle size.