How did every thing in this world started?
Well there's a lot of answer for this. On religious view, God created the world according to his view. He created life and everything that surrounds it. On scientific view, I guess there's a lot of theories that would support to this. We have the evolution theory and other's that im not aware of. A lot of people discussed about this but the true answer is still unknown. It's really hard to answer this question because there's no basis or proof where life started.
I strongly agree with this. This is debatable because there's no strong proof where life really started. It's just like asking a question " What came out first, the egg or chicken? Many theories came out just to uncover the truth about life's creation. I think it's better if we will just leave the unknown and just live with our life.