2. based on their names, you know that the bears ursus arctos and ursus americanus do not
belong to the same
phylum.
class.
genus.
species

The correct option is D.  Based on their names, you know that the bears Ursus arctos and Ursus americanus do not  belong to the same species.

Explanation:

In the field of biological sciences, taxonomy can be described as the classification of an organism based on its similarities and differences with another organism. This classification has eight main domains which are Domain,Kingdom, Phylum, Class, Order, Family, Genus and Species.

An organism's scientific name has two parts: the first part is the genus name and second part is the species name. According to this rule, Ursus arctos and Ursus americanus belong to the same genus but are different species.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

not: both offer magnification to the atomic level.