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It is made up of inorganic materials like rocks or water, and organic materials, like fallen leaves (hojas caidas) or the remains(restos) of living things.
There are different types of soil:
- Granite soils (suelos graníticos):
They are made up of a rock called granite.
- Siliceous soils (suelos silíceos):
They are made up of slate (sílice).
- Clay soils (suelos arcillosos):
They are made up of clay (arcilla). They are very good for farming (cultivo) because they are very fertile.
- Limy soils (suelos calizos):
They are made up of limestone (cal). They are less fertile than clay soils.
- Sandy soils (suelos arenosos):
They are made up of sand. We can see this type of soil on beaches.