When studying moose foraging behavior, you note that moose spend some time eating aquatic plants even though the leaves of deciduous trees along the shore have higher energy content. what might explain this observation?

Moose is the largest and heaviest species of deer found in mainly Alaska, Canada, some parts of the United States. They are herbivores and feed on leaves, grass, bark, shrubs, and fruits.

Aquatic plants are a great source of protein and salt which is not found in an appropriate amount in leaves of trees but it is important for moss for its growth, therefore, aquatic plants are one of the essential parts of moose diet.

Aquatic plants also have minerals like iron, phosphorus, sulfur, iron, calcium and it also contains crude fibers that attract moose because of its rich nutritional quality.  

Therefore to obtain salt and these variety of nutrients moose spend some time eating aquatic plants which are not present in leaves of deciduous trees.

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.