Question

we have found water on Mars but finding life still won't be easy why?

Answer 1

because NASA said that that is most possibility of Agriculture but there is less possibility of livelihood

Answer 2

the atmosphere,the most dynamic thing which is gifted to us by nature is only available on the earth not on any other planet .other resources can make the life possible but the main thing is we need atmosphere, different types of gases which we need for our survival that is only present on the earth surface...!!!