but sure some bacteria would survive (Score 0)

bacteria produced earth's first oxygen allowing plants to live and mass produce oxygen , i think bacteria is the solution to begin a new evolutionary cycle in mars , we dont have to gain any thing now , we just should infect mars with life and watch life do it's thing , it would find a way to survive and may be even invent new ways and form a new type of creatures in millions of years ! you don't have to gain any thing just find a way to infect it with life