What are the causes of soil compaction?

Factors which lead to or favour soil compaction are

- use of heavy vehicles, equipment on field and

- type and condition of soil also plays an important role in causing soil compaction.

Explanation:

The causes of soil compaction are as follows –  

a)Use of heavy machines on field – Use of heavy axle machines with weight exceeding 10 tons causes compaction of soil to greater depth.  

b)Frequent and early planting also causes soil compaction due to continuous weight on soils.  

c)Soil type -  Soils with low level of organic matter are more susceptible to compaction as they do not have gravels (aggregate) to resist the compaction forces.  

d)Soil condition – Wet clay soils are easily compactible as compared to sandy soil.  

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.