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Limestone is composed of tiny shells that fell to the ocean’s floor when sea creatures died. The pressure from other shells, the water and sand washing over them squashes the tiny shells together into rock. When the pressure continues, it can turn into marble.Limestone is hard and durable, making it a commonly used material in architecture.The Great Pyramid of Giza is made entirely of limestone, and many buildings and statues are as well. Spectacular erosional landforms known as karsts surface in rocky outcrops and islands.The goal of this experiment is to explore the formation of limestone as it happens in nature. Calcium carbonate is the main component that forms shells, and when marine life dies those shells settle on the bottom of the ocean where they collect.Over time, limestone is formed.
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Fecha publicación: 12.5.2016
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