life
No, there is no oxygen on any other planet other than Earth because there is no planet life on the other planets.
Well, Pluto isn't recognized as a planet, but as a dwarf planet. Also, there are other dwarf planets, but they are more like really big comets than they are planets.
It is a dwarf planet. It is smaller than the other planets.
Planets orbit stars, not other planets. A planet-like object that orbits a planet is a moon.
it is a dwarf planet and it is not in back of the four main planets which all of the other dwarf planets are
No. Planets do not have dwarf planets. A planet-sized object orbiting a larger planet is a moon. Dwarf planets orbit the sun independent of other objects.
hottest planet
depending on the planet there cannot be living things on other planets
Yes
Planets don't have planets. The Sun has planets, and planets have moons.Dwarf planets might orbit around each other, but this answer uses the correct definition of the term planet, which does not include Pluto or Charon.
It is Neptune because the other "planets" are dwarf planets
As of now, the only planet known to have its own moon is Earth. Other planets in our solar system have moons but no planets of their own. In our solar system, moons primarily orbit around planets rather than planets orbiting around other planets.