There are no rock solid facts that Mars can't support life. Actually, most astronomers and NASA specialists believe that there is life on Mars. Not the sterotypical aliens or little green men, but life as in single celled organisms and bacteria. This is why we have not brought back samples from the Martian surface, there is a big possibility of contamination by an outside life form.
Maybe
It is possible that very primitive life could survive on Mars, but not advanced life leading to anything like humans.
Yes
No, but scientists believe that there could have once been life on Mars.
Yes there is proof that there was water on Mars and possibly even life.
The topic of life on Mars has been one of hot debate lately with the recent Rover bot finding more "possible" signs of life on Mars. However, there is no definitive evidence that there is life on Mars.
It is becoming more and more likely that life will exist on mars. This is because mars has many quality's that the earth has. It is possible, that in a a few million years (although this is not by any means definite) that life will fully exist on mars.
is life possible on mars
Because there is no water,oxygen,food.
Earth is similar to Mars because we know that life is possible on earth and some scientists believe that life is also possible in mars because it has some things which is also present in Earth and is needed for all living things.
No, because there is no life on Mars, so that wouldn't be possible, all planet Mars can do is erode and grow smaller or bigger.
There are many places to find the facts about Mars's surface. These facts can be found online and in the local library.