Question

what are viruse what is so important about them are they any use of us/​

Answer 1

Answer:

The importance of a virus is not due to the virus itself, but to the hosts they infect and affect, and many viruses are important because they cause diseases in humans, animals, or crops.

Answer 2

Answer:

This is due to one of their most important properties:

Explanation:

the ability to infect a cell. As you might know, this can take the form of a cold, some form of flu or worse. However, viruses do the same with other organisms, too. The reason they infect cells is simply to reproduce.