Earth

Earth is the planet that humans and many other animals call home. It is the only known planet that holds life. The earth’s atmosphere consists of 78% nitrogen, 21% oxygen, 0.9% argon, and 0.03% carbon. The atmosphere is one thing that lets life live on earth. Without the atmosphere, huge meteorites would be a lot more common. The earth is exactly 1 AU from the sun. It has only one moon orbiting it. The earth is 4.6 billion years old. The earth is 70% water and 30% land. Earth is one of the inner planets and is rocky. Earth is the only planet that does not have a name from a roman god. Earth is an intriguing planet and the planet we live on.