adam and eve come from? its like they couldnt have poped out of the middle of nowhere

Adam came from dust, and Eve came from one of Adam's ribs.

I wouldn't put much stock in that though, since I don't think either Creation story is meant to be taken literally.

Well where did anything come from?
How you answer that might just help show your answer to your question.

The marrow of the ribs is a prime place to extract some of the newest cells from.

Adam was made from dust, and Eve was made from one of Adams ribs. Also simply God just has the power to make someone.. But God decided to make us that way he did.