1st sorry for my english, if there are mistakes...
I have an idea in my mind and I would like to ask you people, who understand science more than me, what do you think of it:
So we separate living world and non-living world (saying non-living I mean stones, water and so etc.). The living world has one very specific thing in itself. It is, let's call it force that make it survive. In organisms this is called 'an instinct of self-preservation'. What is this force? In my oppinion this is a natural force that existed even before the life(what we understand of it) appeared. If this is so, it means that life is just a manifestation of this force. This force I suggest is something absolutely normal like the force of gravitation and it is one and the same everywhere in the universe. I believe this force, affects both 'living' and 'non-living' worlds. If this is so, it means that life exist in stones and in all nature, because it is element of the universe.
Well it is not the complete exact idea, but I hope I managed to explain it understandable. It sounds possible to me... PLEASE COMMENT, ASK QUESTIONS IF DID NOT UNDERSTAND. Thank you!