The job of the immune system is …: Protect the body , Good bacteria helps the digestive system to…: Break down our food , Viruses can infect…: animals, plant, people , How do bacteria make more of themselves?: binary fission , Bacteria can’t be seen without a…: microscope , They are protected by a: coating of protein , Examples of a bad bacteria are : food poisoning, pneumonia, and tetanus , What does a virus inject into a cell?: its genetic material ,

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