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 a process by which the tooth breaks down. There are a number of reasons for tooth decay including a poor diet high in sugars and acid, inadequate personal oral hygiene, genetics, and other factors.ooth decay, often referred to as a cavity is formed when bacteria that normally exist in your mouth use carbohydrate-containing foods (cookies, candy, sweetened cereal, fruit, soda, etc.) to produce acid.