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Micro-organisms are molds and bacteria that can cause illness, though some molds are harmless on foods like cheese. There are more micro-organisms on a person's hand than exist in the entire world due to touching various surfaces and people. Bacteria are micro-organisms that have existed for over 1,000 years and cause diseases, and there are thousands of microscopic particles that can only be seen with sunlight that get on surfaces due to touching. The document provides basic information about micro-organisms like bacteria and molds, noting they are everywhere due to touching things and can make people sick while some are harmless.




