Here's the breakdown:
* Bedrock: This is the solid, unweathered rock that lies beneath the soil. It's the foundation upon which soil forms.
* Decaying organic matter: This is called humus, and it's a crucial component of soil. It's formed by the decomposition of dead plants and animals.
Soil is made up of several components:
* Mineral matter: This comes from the weathering of bedrock.
* Organic matter: This is the humus formed from decaying plant and animal matter.
* Water: Water is essential for plant growth and soil processes.
* Air: Soil needs air for respiration by organisms.
So, while both bedrock and humus are important for soil formation, they are distinct components.
