Soil is a substance; anything consisting of real physical matter is a substance.
Mixture "Heterogeneous"
A substance that could be dissolved in soil, such as organic substances(food remains, fossils...)
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Gold
The main pure substance in soil is mineral matter, which includes minerals like clay, silt, and sand. These mineral particles make up the solid components of soil. Organic matter, water, and air also contribute to the composition of soil.
Earth is the substance of the land surface, where we have a variety types of soil with different colors.
Soil color is normally influenced by the amount of proteins present in the soil. Red soil indicates as does yellow the presence of iron oxides.
they get their nutriants from the soil beneath them. it provides water and substance for them.
Pollutant
No special substances; for the soil aeration are important: soil density, soil porosity, dimensional distribution of pores, granulation, humidity, the presence of the worm Lumbricus terrestris.
A substance that pollutes the air, water, or soil is called a pollutant. Pollutants can come from various sources such as industrial activities, vehicle emissions, and agricultural run-off.