Microorganisms can harm humans by causing disease. Bacteria cause diseases like tuberculosis and cholera. Viruses cause diseases like the common cold and influenza. Fungi cause diseases like ringworm and yeast infections. Microorganisms can enter the body and cause infection through cuts, ingestion, inhalation or other routes of entry and then multiply within the body.

1. The harmful effects of microorganisms Manniseh Yakun

2. State the harmful effects of microorganisms on human being Relate each group of microorganisms to the diseases caused by it Describe the various ways how microorganisms can cause infection