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.  

answer; i believe that the correct answer is (lung);

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.