All mollusks build their own shells, whether they live in water or on land. Creatures like snails, clams, oysters and mussels use an organ called a mantle to secrete layers of calcium carbonate ...

Ocean acidification can negatively affect marine life, causing organisms' shells and skeletons made from calcium carbonate to dissolve. The more acidic the ocean, the faster the shells dissolve. By ...

Millions of shells of tiny sea creatures fell to the ocean floor after death. Compaction built up all these Calcium Carbonate shells into a 'blocky' rock called Carbiniferous Limestone.

It particularly affected the way calcium carbonate is formed. This crucial compound helps build and fortify things like coral reefs and shellfish shells ... carbonate formation, which may have ...

Glitter is festive and fun—a favorite for decorations, makeup and art projects. But while it may look harmless, beautiful ...