Rock.
It is mostly rock.
mars is made mostly of rock
No, Mars is made mostly of rock.
mars is mostly made of rock because it is a rock planet. earth,mercury, and venus are all rock planets
Mars is mostly rock.
Mars is made of rock.
rock not gas
rock.
rock.
Rock.
It is mostly rock.
mars is made mostly of rock
rock.
Mars is mostly rock
No, Mars is made mostly of rock.
Mars is a terrestrial planet, not a gas giant. Mars is a terrestrial planet because the majority of it is rock, not gas.