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The animal classification with the most number of species is the insects, within the class Insecta. Insects make up approximately 75% of all animal species on Earth.
Phylum is the second broadest classification grouping for animals, following Kingdom. Phylum divides animals into major groups based on general characteristics such as body structure and organization. Examples of phyla include Chordata (which includes vertebrates) and Arthropoda (which includes insects and crustaceans).
The most abundant category of animal species is the insects
The highest level is kingdom. Humans belong to the animal kingdom.
species
The most detailed level of classification is species. Organisms within the same species share similar characteristics and can reproduce with one another to produce fertile offspring. This classification is followed by genus, family, order, class, phylum, and kingdom.
The most basic and general level in the hierarchical classification scheme is kingdom. From there the classifications get more specific.
Domain is the highest and most general level in the hierarchical classification scheme.
Uni/Multicellular organisms with nuclei and membrane-bound organelles.
It is Domain.
The species level is the smallest and most specific classification level in the taxonomic hierarchy. Organisms within a species share similar traits and can interbreed to produce fertile offspring.
Escherichia is a genus within the family Enterobacteriaceae.