In what sense are viruses on the border between material that we consider as living versus non-living?

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    Viruses contain no DNA or RNA, only simple molecules that govern their functions.
     Viruses cannot reproduce on their own, but must make use of the genetic machinery of the cells they invade to multiply.
     Viruses cannot react to their environment, and can only make simple copies of themselves on their own.
     Viruses do not take in nourishment from their surroundings.
     Viruses have no capacity for genetic change.
asked Sep 20, 2012 in Astronomy by anonymous
    

1 Answer

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Viruses cannot reproduce on their own, but must make use of the genetic machinery of the cells they invade to multiply.
answered Sep 22, 2012 by SkyStar ~Expert~ (2,855 points)

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