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Species is one of the basic units of biological classification.

Species may also refer to:

• Chemical species, a common name for atoms, molecules, molecular fragments, ions, etc.
• Species problem, a mixture of difficult, related questions that often come up when biologists identify species
• Combinatorial species, an abstract, systematic method for analysing discrete structures in terms of generating functions
• Species counterpoint, a relationship between two or more voices in music
• Species (film), a science fiction/horror film
  • Species II, the sequel
  • Species III, a direct to video sequel
  • Species: The Awakening, another direct to video sequel
• Species in Christianity can refer to the bread and wine used in the Eucharist

See also:

• Specie, an unrelated term used to refer to coins

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