EARTH
Earth has the only one moon, unlike the other planets 71% percent of the earth land is covered in water. Its the only planet where water exists in liquid form. Earth is from old English and German, the atmosphere is 21% oxygen, and 77% nitrogen. It takes 24 hours to turn on its own axes and 365 days or a year to make a single trip around the sun. As for as scientists know is the only planet with life on it. Earth is also one of the inner planets.