What may happen to a species if it remains in isolation over a long period of time?

It will slowly die off or reproduce (not sure)

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.

The answer is a. i hope this