Answer: When the solar system settled into its current layout about 4.5 billion years ago, Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle, and a solid crust.
Explanation: Earth is our home. We rely upon it for our existence in many different ways. Its resources feed us and provide the materials of our way of life. Even modest changes to Earth's systems have had profound influences on human societies and the course of civilization.
Our Earth provides us with everything we want, but also everything we need to survive! Earth provides the food we need for fuel, water we need for hydration, air and the oxygen we breath, raw materials, literally everything we need comes from this one planet.
