What did darwin do in order to study plants and animals?

He went to the Galapagos Islands and studied different species of finches and plants that had adapted differently on the different islands. 

The correct answer is c

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.