When organisms are classified, they are given a two part name, such as canis lupis felis catus equus ferus the first part of the name represents the genus of the organism. the second part of the name represents the organism's species. this naming system is known as

The answer is Binomial nomenclature.

Binomial nomenclature is a system of naming of an organism by two names is introduced by Carolus Linnaeus. In this system the name of any organism is written by its genus name and species name. While writing the scientific name of an organism, the name of the genus written first with a capital letter and the name of the species is written second with a small letter. For example, Canis lupis is the scientific name of wolf. Canis is the generic name and lupis is species name.  

organisms that are both used in toothpaste as well as cause malaria are protista and monera.