Question

what useful effects and harmful effects of virus in biology​

Answer 1

Disadvantages:-

1.Virus cause deadly disease.. Eg Ebola virus, Nikal virus

2.Virus interferes the functioning of host cell and makes it to produce more of its kind.

3.Viruses are very small even smaller than bacteria.. Virusss too harm them especially the useful bacteria

Advantages:-

1.Viruses are used in medical purposes.

2.Viruses are now being used in the field of chemistry