3.
how does physical water scarcity compare to economic water scarcity?
a. physical water scarcity is caused when there is naturally a lack of water in an
area, while economic water scarcity is caused when humans alter a once
useable water source.
physical water scarcity is caused solely by droughts, while economic water
scarcity is caused by humans' contamination of water.
c. physical water scarcity is caused by a natural lack of water in an area, while
economic water scarcity is caused by a region's inability to afford water.
d. physical water scarcity is caused by humans' contamination of a water source,
while economic water scarcity is caused by the lack of natural water sources in
an area.

dgjnuuk

explanation:

is the dgjofgkg. huukkg u

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.