Answer:
Explanation:
Seashells are the exoskeletons of mollusks such as snails, clams, oysters and many others. ... Mantle tissue that is located under and in contact with the shell secretes proteins and mineral extracellular to form the shell. Think of laying down steel (protein) and pouring concrete (mineral) over it
This week marks the 81st anniversary of the death of the last known thylacine in Hobart’s Beaumaris Zoo, but “sightings”, videos, rumours and research are alive and well.
