Design with interdependent layers presents a challenge to neo-Darwinism. Natural selection is oblivious to anything but an immediate beneficial variation.
There is more going on in biology than is dreamt of in materialist philosophy.
Scientists debate whether ctenophores are the earliest animals to appear in the Cambrian explosion. If so, they arrived with multiple tissues, a nervous system, and a digestive system.
Walnut shells are found to create 3-D puzzles with tissues that even toothy squirrels can’t easily crack.
Mother-of-pearl, or nacre, is not only a beautiful substance for jewelry and ceramics; it is a remarkable material.