Quote Originally Posted by something
you are simpliying this way way too much, humans need much more than just water and oxygen to survive

chances are life exists somewhere else in the universe, but when you factor in time it starts to get ridiculous. i think the chances of us ever finding life, intelligent life for that matter, are very remote.

water and oxygen is all our bodies need to survive, of course food too but food can count as anything we can eat and digest properly, where as Water and Oxygen is more special