Hydraulic fracturing (fracking) has allowed North Dakota to increase the amount of oil it produces and sells. Which of the following is a benefit of using this technology to find oil and gas:

A)

Fracturing can contaminate the groundwater supply

B)

Air pollution and noise pollution increase in what used to be a very clean, quiet area

C)

A lot of natural gas is burned / wasted during this process

D)

This technology provides a lot of high-paying jobs

blah

explanation: bc blah

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.  

if you listed your answers right then i believe your answer is b.

the answer is c because it is most logical.