Pluto is a solid planet. Pluto is made mostly of ice, although the core is most likely rock with metal in it.
The planet Mars has glaciers made of water ice, mostly located in its polar regions. These glaciers have been observed by orbiters and are thought to be composed of a mix of water and carbon dioxide ice.
The answer is Pluto. Pluto isn't a planet anymore so there is no planet made up of rock and ice.
Earth is covered mostly in water, but is not made up mostly of water. Most of earth is made of rock.
mostly ice
Milk. Sugar. Ice
Pluto is not a planet, and there are many other objects in the solar system made of ice.
ice and rock
the moon
Saturn has the most visible and prominent rings of any planet in our solar system. Its rings are made of mostly ice particles and debris, which reflect sunlight and make them easily visible from Earth.
They are mostly made of ice and rock.
Mostly gas and ice