Teen, honestly, there is no logical answer. There are certain things that just cannot be fully proven. There can be a scientific explanation for just about everything.
The way I like to look at it is that the system is so perfect, there is no way it can run without God. If you change a small thing in nature, it effects the whole world. A ten degree change in the world temperature can be catastrophic! The system is so balanced and that balance is so delicate…there needs to be God to be the “conductor”
I hope that helps. Never be afraid to ask!