Mercury is warm but Mars is not there could be water on Mars there are ice sheets on the N/S poles of Mars too
Neptune is a freezing gas giant with no solid surface and very little sunlight. Mars, Mercury and Venus are hot or warm planets with rocky surfaces and plenty of sunlight.
The order of Mercury ,Venus and Mars by size is: Mercury ,Mars and Venus
Earth > Venus > Mercury > Mars
Mars, Mercury, and i think that's it.
Mercury is closer to the sun than mars
Mercury
Mercury is smaller than Mars. While Mars has two moons orbiting it, Mercury has none. Mercury has a hotter surface temperature than Mars due to the fact that it is closer to the Sun.
Mercury is the first planet from the sun, Mars is the fourth.
Mercury, Venus, Earth and Mars
Mars is only about a third larger than Mercury, having 1.34 times the surface area of Mercury. Mars-6,788 km Mercury-4,880 km
Mars
mars is obviously larger than our moon not Mercury