Classification is a science that scientists resorted to dividing living organisms and placing them in kingdoms in order to facilitate their study and knowledge of the characteristics that distinguish each kingdom from others, according to the modern classification into five kingdoms (primitives, lineages, fungi, plants and animals) .As for viruses, they are not living organisms because they are a link between inanimate objects (outside the host's body) It behaves the behavior of the organism inside the host's body in the event of an injury