Answer Happy

Which of the following statements about Mars are TRUE? (Choose multiple answers). The northern hemisphere is very heavily cratered & higher in elevation than the southern hemisphere. Mars is very red in color because its surface is rich in iron oxide. Mars' ice caps are composed of a mix of carbon dioxide & water ice. The water ice is more permanent than the carbon dioxide ice. Mars' volcanoes are still active today, as seen in a number of recent photos showing fresh lava flows. The northern hemisphere consists of a younger surface than the southern hemisphere. The northern lowlands are essentially smooth volcanic plains which may have been partially filled with water in the past. Several spacecraft have landed successfully on Mars & a number of rovers have studied its surface, some of them lasting for far longer than anyone expected. Mars' axial tilt is too shallow to allow it to have seasons, so each location on the planet receives the same amount of sunlight all year long. Mars is home to the solar system's largest volcano & its largest canyon system. Mars' current climate may have a lot to do with its interior cooling down & ultimately shutting off its magnetic field.