Here's a breakdown of the soil horizons:
* O Horizon: This is the uppermost layer, primarily composed of organic matter like decomposing leaves, twigs, and other plant residues.
* A Horizon: This is the topsoil, rich in humus (decomposed organic matter) and minerals.
* E Horizon: This is the zone of eluviation, where minerals and organic matter are leached out.
* B Horizon: This is the subsoil, where accumulated minerals from the E Horizon are found.
* C Horizon: This is the parent material from which the soil is derived, such as bedrock or glacial till.
* R Horizon: This is the unweathered bedrock.
So, the O Horizon is the first layer of soil you encounter, full of organic matter undergoing decomposition.
