Which of the following is not a component of soil?
a.
organic material
b.
minerals
c.
gases
d.
none of the above

The correct answer is option d, that is, none of the above.

Explanation:

Soil comprises inorganic molecules, organic molecules, and water, air. The majority of the parts in the soil are formed of inorganic components that hold about 45 percent of the total composition of the soil.  

Apart from this, the rest of the soil comprises about 50 percent of the air and water and about 5 percent of the organic matter. The minerals are produced due to the dissociation of rocks into fine constituents and some essential minerals are phosphorus, iron, potassium, sulfur, calcium, and others.  

The organic matter comes from the decaying and the dead parts of animals and plants. The gases found in the soil are nitrogen, oxygen, and carbon dioxide.  

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