God never indicated that nature in the fallen world would be perfect, in fact quite the opposite is stated. However the processes of nature which bring forth both life and death still follow the laws of nature. When natural laws are contravened we have a phenomena or a miracle if you will, but both miracles and laws of nature are by design and operate within a finely tuned and maintained universe. We know this by fact and by faith-- as those two walk hand in hand with the evidence and with the inscrutability of divinity on some points.