Do you know what could be living in your mouth? Take a look at some of these tricky questions and see if you know the answers.
The number of bacteria in your mouth is closest to the population of which of the following?
A dog’s mouth is cleaner than a human’s.
If you drop food on the floor, it won’t pick up any germs if you pick it up within five seconds.
Click on the photo below to find out the answers to these questions and more.