That will known to you in the next 50-60 years. but it has been found that there is some amount of ice and water exposed there. they have also seen some footprints laid by some martians.
Till now there has been no signs of life on mars but it is said that life existed in mars before life started on earth. It can be proved since there has been a report of many rivers flowing with pure water. there has been patterns of the rivers. But now they have been dried up. Now there's no life on mars. probably some life like bacteria like micro organisms may have existed.
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