human
What are the most common types of soil?
assistant
The most common types of soil include clay, silt, sand, and loam. Clay is a fine-grained soil with high water retention properties. Silt is a medium-grained soil that holds water well but can be more easily eroded than clay. Sand is a coarse-grained soil with low water retention properties. Loam is a mixture of sand, silt, and clay, which provides good drainage and fertility for plants.