But fortunately for most of us, the immune system is constantly on duty to battle germs that could make us ill. The following discussion questions and activities will help your students learn about how the immune system protects them from germs and illness.
Elephants however, go through six sets of 9lb teeth during their lifetimes, with new teeth growing in to replace old ones that have worn out. An elephants starts with two front teeth that fall out after about a year and are replaced by a set of tusks.
Answer   Well there is about 32 teeth in a normal persons mouth.....   Answer   The normal adult dentition is 32 teeth, including the third molars (wisdom teethâ¦).   Some people do not develop third molars, so normal dentition for them would be 28 teeth. Ann Andrus.