A ceiling fan is a mechanical fan, usually electrically powered, suspended from the ceiling of a room, that uses hub-mounted rotating paddles to circulate air.
Escherichia coli (E. coli) bacteria normally live in the intestines of people and animals. Most E. coli are harmless and actually are an important part of a healthy human intestinal tract. However, some E. coli are pathogenic, meaning they can cause illness, either diarrhea or illness outside of the intestinal tract.
Gastrointestinal flora are bacteria that help your digestive tract function. Your gastrointestinal tract, or GI tract, is responsible for providing your body with nutrients, vitamins and minerals found in the food you consume.ach person has a unique mix of flora, potentially containing as many as 400 different species. Most belong to the genera Streptococcus or Bacteroides. The great majority of these bacteria live in your large intestine, or colon, where they are contained by its walls and do not invade other parts of your body.