The soil is the surface of the earth’s crust that covers much of the world’s continents and islands. All the components of the environment are important. If the Earth had no water and atmosphere, life would be unfeasible. The importance of the soil is based on the fact that it is the main support for animal and plant life. For something, the five great spaces located in the oceans are called continents. The formation of the soil began with the cooling of the planet and was completed thanks to the action of abiotic and biotic components for hundreds of millions of years through the mechanical dissolution of the rocks, the incorporation of particles and substances from air and water, but above all for the installation of living beings on the planet, almost since its inception and especially in the last 600 million years.
The micro-fauna and microflora enrich the substrate, the medium from which plants are nourished, through their depositions, secretions and other activities during their lives, or the fermentation or putrefaction after their deaths, turning terrestrial soils into authentic living mantles or vital layers, very different from the “dead” floors of the moon or Mars, for example.