When a person spikes the volleyball hard from the other team (or side), a person from the team opposite of the one who just spiked will block the ball and keep it off their si â¦ de.
Tooth decay is the destruction of your tooth enamel, the hard, outer layer of your teeth. It can be a problem for children, teens and adults. Plaque, a sticky film of bacteria, constantly forms on your teeth.
Tooth decay is caused by Sugars and Acids from the things we eat and drink. But if tooth decay has become a problem, than if you wâ¦ere to cut out Acids and Sugars as much as possible, the teeth would actually begin to repair themselves! It makes sense if you think about it. Bones that break heal themselves.