The largest difference between Mars' northern and southern hemispheres is that:
A) the southern appears older, with more impact craters.
B) the northern has all the outflows and must have been much hotter.
C) the northern is higher overall, despite some high volcanoes in the south.
D) the southern has a polar cap, but none ever forms in the north.
E) the southern is much darker, with large mare-like basaltic lava flows.

Question

Quizplus · Accepted Answer

The southern hemisphere of Mars is older and more heavily cratered, indicating it has been geologically inactive for a longer period compared to the northern hemisphere, which has fewer craters and is thought to have been resurfaced by volcanic and other geological activity.

The Largest Difference Between Mars' Northern and Southern Hemispheres Is