Adult frogs live both in and out of water. Their bodies must change to live in both places. Other animals like birds, turtles, cats, and bears do not go through metamorphosis. You have inherited traits. Inherited traits are characteristics that come from your parents.
People start out life as an egg.
The egg contains special material from both parents. This material determines your traits. Not all traits are inherited. Some are learned traits. A learned trait is something that you are taught or learn from experience.