a butterfly is mean of a old caterpillar & a caterpillar is a mean of steels ->  a caterpillar is a kind of insect  a caterpillar is a kind of insect & sizes is when an carries preference from an immature relation to an youth relation ->  an example of metamorphosis is when a caterpillar changes from an immature form to an adult form  the immature relation of a caterpillar is called a butterfly & the youth relation of a butterfly is called a caterpillar ->  a caterpillar is the immature form of a butterfly and a butterfly is the adult form of a caterpillar  an example of metamorphosis is when a caterpillar changes from an immature form to an adult form & a caterpillar is the immature form of a butterfly and a butterfly is the adult form of a caterpillar -> an example of metamorphosis is a caterpillar changes from a caterpillar into a butterfly