The Moon is not a planet, it, as the name suggest, is a moon.
It is not geologically active anymore.
Jupiter has the Moon called Io - the most volcanically active object in our solar system.
Earth is the only geologically active planet among the terrestrial planets. There are some geologically active moons in orbit around the gas giants. Enceladus is quite an interesting moon of Saturn.
Earth is the closest planet the moon, as it is our planet's moon and orbits Earth.
Ariel is a moon of the planet Uranus.
The moon is not classified as a planet at all. It is a natural satellite of Earth.
THE MOON ISN'T A PLANET IT'S A MOON The closest planet to the Sun is Mercury.
The moon Phobos orbits Mars in a nearly circular orbit that puts it closer to its host planet than any other known moon in the Solar System. Phobos oftens approaches within 5826 km of the typical Martian surface features. To give you an idea how close that is, our moon only gets about 354,990 km from Earth's surface. (If you're reading about orbits and distances elsewhere, remember that most sources list the distance from the center of the moon to the center of the planet.)
The parent planet of a moon is the planet that the moon orbits around. For example, the parent planet of Earth's moon is Earth itself. Moons are natural satellites that orbit planets due to gravitational forces, with the parent planet being the primary celestial body that the moon is gravitationally bound to.
The closest planet to the Moon is Earth. The Moon is Earth's natural satellite and is closest to our planet in terms of distance.
Neptoon is the planet that has the moon Larissa.
Because there is no active volcanic activity on the moon. For a planet or moon to develop water, it needs to have active volcanic activity. The steam from erupting volcanoes creates an atmosphere and condensation which, over millions of years, creates oceans. We know the moon had active volcanic activity millions of years ago, because there are pockets of ice on the moon. However, volcanic activity on the moon is now non-existent, therefore, no more water can be produced from volcanic steam.
The Earth is to the Moon as a planet is to its moon. So, if we're talking about a satellite orbiting a planet, then the planet would be analogous to the Earth, and the satellite would be analogous to the Moon.