Which of the following statements is true? A.
Thymine is a nitrogenous base found in the DNA of all living organisms.

B.
Thymine is a nitrogenous base found in the DNA of archaea, bacteria, fungi, and plants, but not in animals.

C.
Thymine is a nitrogenous base found in the DNA of archaea and bacteria, but not in plants or animals.

D.
Thymine is a nitrogenous base found only in the DNA of plants.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.

the scientific method.

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.