6.C
7.A
8.B
9.C
10.Most bacteria reproduce asexually by dividing into two, a process called binary fission.
11.Bacteria can reproduce as long as they have enough nutrients and resources, while viruses cannot reproduce unless they are in a host cell.
12.Bacteria break down dead organic material so that it can be used by other organisms. Bacteria protects us from some harmful bacteria. Bacteria in the large intestine helps break down food into usable components.