Here's a breakdown:
O Horizon: This is the uppermost layer, made of organic matter like leaves, twigs, and decomposing plant and animal materials. It's often called the "humus layer" and is rich in nutrients.
A Horizon: This layer is the topsoil, where most plant roots grow. It's made of a mixture of mineral particles, organic matter, and living organisms. It's usually darker than the horizons below due to the presence of organic matter.
E Horizon: This is a layer found in some soils, particularly those with high levels of leaching (water moving through the soil). It's characterized by loss of minerals and organic matter, leaving behind a light-colored layer.
B Horizon: This is the subsoil, often denser and more compact than the topsoil. It's primarily made of mineral particles and has less organic matter. It may contain accumulated minerals like iron or clay.
C Horizon: This layer is the parent material from which the soil developed. It's often weathered bedrock or unconsolidated sediment.
R Horizon: This is the bedrock beneath the soil, which is the solid, unweathered rock.
These layers work together to create a functional ecosystem, supporting plant life and contributing to the overall health of the environment. The characteristics of each horizon influence factors like water infiltration, nutrient availability, and overall soil productivity.
