Something that ALL viruses have is germs and bacteria, if you are talking about the human body. It will also depend what kind of viruses you are talking about (stomach viruses, Computer Viruses, human body viruses, etc.). Hope this helped!
one thing they all have in common is that they all use electricity.
They are all satelites.
employers
egg
There is no such thing.
egg
egg
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they all need oxygen to survive
they are all larger than earth
Money
All acids have hydronic ions.