But "supernatural" by definition is a negative term - the negation of natural processes - and therefore the only way to know that a "supernatural" process is involved is to first eliminate all possibility of a natural process. Since this is impossible, we can never invoke supernatural explanations.
Not only is it impossible to invoke a supernatural explanation, but there is no scientific evidence for "God". If there is no evidence for it, then it cannot be used as an explanatory entity, any more than we can invoke Santa Claus as the cause of gravity, or unicorns as the cause of hurricanes.
5. Why do you believe that all living things popped up from nothing ?
Creationists believe that organisms do not evolve from prior organisms, or that they emerge from some other form of matter : rather, they believe that some (or all) popped up from nothing, by divine intervention. This is magick fairy tale stuff, and yet millions of people believe this.
What is the actual empirical evidence we have about this ? Do we observe organisms popping out of nothing ? As I pointed out, spontaneous generation has been disproven a long time ago, and no one seriously believes it, not even Creationists. We have never, in all of history, seen an organism popping out of nothing.No possibility exists of such a thing. It would go against pretty much all the laws of physics, for one thing. Nothing less than a complete re-write of science would be necessary before we can accept such an event.
6. Why do we have plenty of transitional forms in the fossil record ?
Do we have many transitional forms ? You bet. We have many species in the transition between fish and amphibians, and amphibians and reptiles, and almost all species in the transition between reptiles and birds, and reptiles and mammals. We also have a fine picture of mammalian transitions, especially that between Australopithecus to modern humans. See the image below for the skulls of these transitions (first skull is modern chimpanzee, for comparison).
