These bacteria exist in many different parts of the body, and their presence usually does not cause any problems for the host body. The following is a list of the main sites for bacteria that consitute the normal flora. 1  The skin, especially the moist areas, such as the groin and between the toes.2  The respiratory tract, particularly the nose. 3  Urinary tract. 4  The digestive tract, i.e. the mouth, the terminal ileum and the colon.hese bacteria exist in many different parts of the body, and their presence usually does not cause any problems for the host body. The following is a list of the main sites for bacteria that consitute the normal flora. 1  The skin, especially the moist areas, such as the groin and between the toes.
Sulfur hexafluoride (SF6) is an inert gas which is six times heavier than the air we breathe, and helium is six times lighter, so sulfur hexafluoride has the opposite effect as helium in being able to make your voice deeper.
What makes a recording of our voice sound so different... and awful? Itâs because when you speak you hear your own voice in two different ways. Greg Foot explains all. The first is through vibrating sound waves hitting your ear drum, the way other people hear your voice. The second way is through vibrations inside your skull set off by your vocal chords.