Living or extinct records whether a species still survives today. Wikipedia notes the wild giant panda population "had increased to 1,864 individuals" as of the most recent national survey, a species very much still alive even as it remains vulnerable. This dimension separates species a visitor could still see today from those known only from the fossil record.
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Reproductive Mode Yes
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Sources
1. Wikipedia: Virus
WikipediaVirus, lead sectionQuote, Virus, lead section
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism.
Encyclopedia of Life
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