What is a tooth?
Q: What is a tooth?
A: A tooth is one of the hard, white structures in the mouth that is used for chewing food during the mastication process.
Q: What is the purpose of teeth?
A: Teeth are used to break up and crush food so it can be swallowed and digested properly.
Q: Which animals do not have teeth?
A: Birds are the biggest group of animals that do not have teeth.
Q: What do some invertebrates have that act like teeth?
A: Some invertebrates have mouthparts that in some way mimic the functions of teeth.
Q: Why do different animals have different kinds of teeth?
A: Different animals have different kinds of teeth because they eat different types of foods.
Q: How many teeth do human adults usually have?
A: Human adults usually have 32 teeth.
Q: How many teeth do human children usually have?
A: Human children usually have 20 teeth.
