In Central and Northern California, the Red-legged Frog (Rana aurora) breeds from January to March. The closely related Yellow-legged Frog (Rana boylii) breeds from late March through May. Based on this information, which of the following is a scientist most likely to observe if these two species of frog are studied for multiple generations? The two species may experience convergent evolution due to differences in the timing of sexual activity.
The two species may experience divergent evolution due to differences in the timing of sexual activity.
The two species may experience adaptive radiation due to differences in the timing of sexual activity.
The two species may experience coevolution due to differences in the timing of sexual activity.

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.