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.
How many teeth does the adult human have? How many teeth does any adult have? 32   Young adults have 28 teeth. 4 more teeth arrive in early adult hood (often described as wisdom teeth) at the very back of the jaws. So they have 32 teeth when these tâ¦eeth arrive.   If your question is how many teeth does the average adult lose to dental problems, accidents and other occurences I don't know the answer. It probably varies by occupation. Boxers and other people who take part in contact sports may get teeth knocked out.