A virus that attacks bacteria is called a "Bacteriophage"
Bacteriophages are viruses of bacteria and they look somewhat a space ship. Some think that they look like a landing craft with several legs.
bacteriophage
Bacteriophage Lambda virus does that.
phages infect bacteria.
Bacteriophages are viruses that infect the cells of bacteria. For this reason they are commonly used as alternatives for antibiotics in some countries.
bacteria
No. A virus must attack a cellular life form in order to survive.
Bacteria can attack and kill cells. White blood cells can kill bacteria.
That is certainly not true. There are for example viruses that routinely wipe out almost the entire tentworm population. There are others that attack bacteria. Some viruses attack cancers!
B. Colds are caused by viruses, and antibiotics only kill bacteria
Groups of viruses that attack a certain pack of bacteria.
Bacteriophages ARE viruses that attack bacteria, making this question invalid. But if they meant to say "what bacteria does it attack?" then I would say T4 and E. Coli
Bacteria and viruses attack the body. Each type of bacteria and virus attack different areas of the body. Also, there are many different ways of gaining access to the body. They attack the body by trying to shut down a certain system, which without your immune system, would kill you. Bacteria and viruses evolve. However, viruses aren't presently categorized as living organisms.
they attack bacteria and viruses that make us sick
A biodefence is any defensive measure taken against an attack using bacteria, viruses or toxins.
There are no bacteria or viruses on mars.