Umm, the theory of universal common descent is a fairly broad model, and it's perfectly falsifiable (Karl Popper argued otherwise, but I don't find his argument particularly compelling). Is it your position, then, that the broader a model is, the less falsifiable it needs to be?
The first forms of life, as we know it, all were forms of prokaryotes. You're most welcome to start digging, instead of writing stuff on the net.
Yes, it was. It doesn't matter how many words you use; how many sentences you put in, how many paragraphs you write down; how many essays you publish somewhere; how many books you write; ID still is the opposite of science.