What is the Scientific Process of arranging organisms into groups based on similarities?
classification, though with organisims it is generally not done simply by noticeable similarities, but also but relationships between species as proof by the fossil record and genetic research.
What are the rankings in biological classification or 7 levels of classification?
7 ranks in biological classification
Species
Genus
Family
Order
Class
Phylum
Kingdom
Domain
Life
What makes each rank different from the other?
What makes each rank different is evolution. The similarity between organisms placed in the same species is not a random guess, but the result of a shared descent from there ancestors.
Which group includes the most Species?
Kingdom is the rank that has the most species.