Which event occurs after erosion of earth’s surface? a: surface material breaks down into smaller pieces. b: very dense particles settle faster than low-density particles. c: large particles are carried away to a new location by ice and glaciers. d: round particles form new landforms more slowly than flat particles do.

B. Very dense particles settle faster than low-density particles.

Erosion is a natural process in which the surface layer of the soil or rock is removed and the sediments are dislocated and transported to other locations. This occur because of the effect of the physical agents such as wind and water. After the event of erosion the materials or sediments which are displaced they settled on the basis of their density.

Very dense particles settle faster than the low density particles because more dense particles exhibit larger mass per unit volume, they are heavier and gravity will act more on these particles and causing them to settle faster than the less dense particles.

b

Explanation:

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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.