Question

. What are viruses? How are they observed?
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Answer 1

Answer:

virus is a small parasite that cannot reproduce by itself. Once it infects a susceptible cell, however, avirus can direct the cell machinery to produce moreviruses. Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded.

Answer 2

Answer:

A virus is a small parasites that cannot reproduce

by it self . Once it is infects susceptible cell and they are unicellular oraganisms.