Question

explain the virus in biology​

Answer 1

Answer:

virus is a infection which kills many people due to its harmful effects

Answer 2

Answer:

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