Its evidence proves that it once had oxygen and it has iron, the iron rusted to make the red
No the iron in the soil gives it the reddish colour.
the soil is orangey-red some soil is dark red or black
No. Sulphr does.
Because Iron Oxide (rust) is blended in with the soil of Mars, which is why it appears red.
Mars soil is red due to the presence of iron oxide, or rust, which gives the soil its characteristic color. The iron in the soil has been oxidized over time, reacting with the planet's atmosphere to create the reddish hue.
The red color of Mars' surface is due to iron oxide, or rust, in the soil and rocks. Over time, these iron particles have oxidized when exposed to the planet's atmosphere, giving Mars its distinctive red appearance.
Mars is the red planet, because it looks red on close approaches. The next close approach will be in the spring of 2014, you can have a look at it then.
No! It is red because of the reddish iron soil.
Mars
MARS!
From iron in the Martian soil.
Mars