Which conditions are typcial of the soil the deeper we dig into it?

As we dig deeper into the soil, we typically encounter increased compaction and a higher concentration of minerals, leading to denser and less fertile layers. The organic matter decreases significantly, resulting in lower biological activity and less nutrient availability. Additionally, deeper layers may show variations in color and texture, often becoming more clayey or rocky. Moisture levels can also vary, with deeper layers sometimes retaining more water due to less evaporation.