Answer:
Examples of good bacteria include L. acidophilus, Bifidobacterium bifidum, Streptococcus thermophilus and Bacillus coagulans, and some examples of bad bacteria include Clostridium perfringens, salmonella, staphyloccus aureus and listeria monocytogenes. Some types of bacteria can be both good and bad. Bacteria are simply single-celled organisms, and they aren’t all intended to make us sick. In fact, calling them good or bad might vastly simplify bacteria, but more on that in a minute. Bacteria linger nearly everywhere on your body and in some cases, can be harmful (such as in your lungs).
Step-by-step explanation: