Another one to add to the atrophying eyes is collagen. My daugher was asking me today what feathers are made of (she'd found a pigeon feather in the garden). I told her they are made of the same material as finger and toe nails, hair, beaks and claws: collagen.

If God created every organism individually, it's curious that so many of these creatures' bodies create collagen for such similar uses. I mean, God could have chosen to use any material at all. It's sort of like homologous structures really. Why would a creator make homologous structures when creatures could have been made so very differently from each other? Like the sorting of the fossil record in the geological column, is God having a joke on us, in making it appear that organisms are related to each other?