Study the amino acid sequences of the same protein taken from four different species of
plants. which pair of plants is most closely related?

species 1: a-p-a-c-w-
species 2: g-p-g-s-f-
species 3: a-p-a-c-f-
species: -n-k-m-h-h-

a. species 2 and 4

b. species 1 and 3

c. species 3 and 4

d. species 1 and 2

D species 1and 2 is the following answer of the following answers

B) Species 1 and 3

Explanation:

Species 1 and 3 have four proteins in common, while the others have less.

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.  

producers within ecosystems are essential as they are at the base of the food chain. plants are examples of producers. they use the process of photosynthesis to capture light energy and use it to convert simple inorganic substances (carbon dioxide and water) into organic substances (glucose).