A mixture of small particles of rocks, various minerals, and humus is called soil.

Here's a breakdown of the components:

* Rocks: These are broken down into smaller particles (sand, silt, clay) through weathering and erosion.

* Minerals: These come from the breakdown of rocks and provide essential nutrients for plants.

* Humus: This is decomposed organic matter, providing further nutrients and improving soil structure.

Soil is a complex and vital component of our planet, supporting plant life and forming the foundation of many ecosystems.