All modern frameworks related to taxonomy have their underlying foundations in the Linnaean arrangement framework. It was created by Swedish botanist Carolus Linnaeus during 1700s. He attempted to arrange every single living thing that was known at his time. He gathered life forms that exhibited mutual evident physical qualities, for example, number of legs or state of leaves. For his commitment, Linnaeus is known as the “father of scientific classification”.
The Linnaean arrangement of order comprises of a pecking order of groupings, called taxa (particular, taxon). Taxa run from the kingdom to the species. The kingdom is the biggest and most comprehensive gathering. It comprises of living beings that offer only a couple of essential likenesses.
As his classification was merely based on the physical traits it had certain incorrectness later which was rectified by addition of domains in the classification system.
Convergent evolution explains that non-related species can develop similar traits due to adaptations that happened while living in similar ecosystems. For example sharks which are a type of fish have similar body plans to dolphins, a type of mammal.
Narrow-spectrum antibiotics target a few types of bacteria. Broad-spectrum antibiotics target many types of bacteria. Both types work well to treat infections. But using broad-spectrum antibiotics when they're not needed can create antibiotic-resistant bacteria that are hard to treat.
