How is life on Mars dependent on the actual geography and structure of the planet

We haven't found evidence of life yet.

But it would be dependent on geography and planet structure because not all places are easy to live in.

Life in Mars:

Mars is specifically compelling for the investigation of the inceptions of life in light of its similitude to the early Earth. This is particularly so, since Mars has a chilly atmosphere and needs plate tectonics or mainland float, so has remained practically unaltered since the finish of the Hesperian time frame.

At any rate 66% of Mars' surface is more than 3.5 billion years of age, and Mars may along these lines hold the best record of the prebiotic conditions prompting life, regardless of whether life doesn't or has never existed there, which may have begun creating as ahead of schedule as 4.48 billion years back.