Respuesta :
1.5 million species have been described and 9 million species are predicted to occur on earth.
What are species?
A group of organisms called a "species" are those that are made up of individuals with comparable characteristics and are able to interbreed or exchange genes. The most fundamental classificational unit in biology is the species, which also serves as a taxonomic rank. A genus is the taxonomic rank after an individual in the biological categorization system.
Therefore, 1.5 million species have been described and 9 million species are predicted to occur on earth.
To learn more about species
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