The natural processes ordained by God after the fall include death and disease and sickness. In order for that to happen natural processes will fall short of perfection.. Ahem just like the Bible says.
The bible is an attempt at explaining the existence of the world and why it is the way it is made by bronze age people who did not have the benefit of science and discovery.
If somehow you and I were transported in time to before the Flood we would be stuck in a metal institute for the handicap. You have no idea about what you speak so confidently.
Check the actual history of creation myths in ancient cultures. Don't just accept what the church and bible study tells you about the world. Try to widen your horizons.
