findings, conclusions, or recommendations expressed in this material are
those of the developer, PASSPORT TO KNOWLEDGE, and do not necessarily
reflect those of the National Science Foundation.
PASSPORT TO KNOWLEDGE - To MARS with MER
If most of the hydrogen on Mars is in the form of water ice why is there so little oxygen in the atmosphere and on the surface?
Fort Collins, CO
On Mars most of the oxygen is tied up in the rocks and minerals. On Earth, most of the oxygen in the atmosphere has been generated by plants. So since there aren't any plants on Mars there is very little oxygen in the Martian atmosphere. On the order of one tenth of a percent.
Mars Exploration Rover Mission