The animals constantly grew new shell material as they aged, but the their bodies always remained in the outer chamber. The walls that separated each chamber helped protect the shell from being ...

Organisms make their skeletons from a variety of materials. Remember, "skeletons" include bone, the protein shell of crabs or insects, the sturdy shells of clams, or the massive rock secreted by coral ...

Sustainability Meets Performance Acer’s sustainability efforts are exemplified with the latest Aspire Vero 16 (AV16-71P), a ...

Pearls are made by marine oysters and freshwater mussels as a natural defence against an irritant such as a parasite entering their shell or damage to their fragile body. The oyster or mussel slowly ...