Why Do People Have Navels?

Each person has a navel on the abdomen. The navel is a scar left by cutting off the umbilical cord when a person was born . When a mother is pregnant ,the umbilical cord supplies nutrition and oxygen for the fetus and carries away the foetal excreta and carbon dioxide . As soon as the baby is born, he or she can breathe and eat independently .The umbilical cord becomes useless and is cut by the doctors .The scar left on the abdomen is the navel.