• Why do you like some tastes better than others?
  Most people prefer things that taste sweet or slightly salty, but ...

• What are teeth made of?
  The outside of a tooth is made of enamel and is the hardest substance ...

• How many teeth do you have?
  Each person has two sets of natural teeth during their life. The ...

• Why does vomit taste sour?
  When you vomit you bring back partly digested food into your mouth. ...

• Which foods give you energy?
  Foods such as bread, rice, potatoes, and pasta contain a lot of ...

• Which foods make you grow?
  Foods such as milk, cheese, fish, meat, and beans contain a lot of ...

• What is the epiglottis?
  The epiglottis is a kind of trap door that closes off your windpipe ...

• How do you smell?
  A smell is made by tiny particles in the air. As you breathe in, some ...

• How big is your stomach?
  An adult's stomach holds about 2 1/4 pints (I liter) of food, and a ...

• Why do some things smell more than others?
  Things that smell strongly, such as perfume or food cooking, give off ...