In some systems of scientific classification, Biota or Vitae is the superdomain that contains all life. For that reason it is often disputed how the taxon should be further divided, as the definition of what life really is is often changed or adjusted, and also extraterrestrial life would be included besides the life on Earth, if it would be discovered. In general, all cellular life is naturally included in the Biota, when there is mention of non-cellular life the taxon Biota is most often simply divided into Cytota (cellular life) and Acytota (non-cellular life).
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