Question

"Virus is both useful and harmful for us", justify this statement​.

Answer 1

Answer:

Because of virus we are together but it kill people so it is neither useful and harmful

Answer 2

Virus are both harmful as well as useful as like human . Recently we see COVID 19 it is very harmful virus on the other hand Lactobacillus

bacteria are normally found in the digestive, urinary, and genital systems. You can also find them in yogurt and dietary supplements, as well as in suppositories. which are very useful

As the two examples above we have a lot of example in both useful as well as harmful bacteria