Question

Used by many natural history museum curators in the preparation of animal skeletons for display, dermestid beetles feed on the decaying flesh of animal carcasses, pulling with its mouthparts to strip the bone of any residual fat or muscle tissue.

Answer 1

Every consumer whether it is an animal, fish or bird has a fix life span after the completion of which they die. Dead remains of these organisms is decomposed by the decomposes i.e converted into simple inorganic substances. These inorganic substances serve as raw material for photosynthesis of the plants . Hence flesh in any form finally becomes grass.The above explanation justify this statement "All flesh is grass".