How are sea shells made?
Answer:
They are made by the animal inside, very similar to the way your body makes bone; but the chemistry I'm not sure of. They are creating the shell out of CaCO3 (Calcium Carbonate), but I don't recall the raw materials or the chemical equation.
As the animal inside grows the shell will grow with them. If you look closely you'll see the growth pattern looks kinda like rings on a tree. The link explains better.
Sea Shells are made by the organism that lives within them. As the mollusk ages, it will build onto the shell making it larger. Empty seashells are left behind from something that was eaten or died.
They're the shells (exterior skeleton) of mollusks as for how they're made see below.
Mollusks make their shells from calcium they derive from their environment, either the food they eat or the water they dwell in. When a tiny mollusk hatches from its egg, it comes into the world equipped with a tiny shell. This shell is actually a part of the animal, growing as it grows, accommodating its needs.
That depends greatly on the kind of shell, could you be more specific? Most are made from deposits from the surface of the seas. Others are produced by the creatures themselves secreted from their DNA. Others are from dead things and decay from dead sea creatures. Some are made from minerals, calcium, oxidation process, and the spoils of war from defeted species, now extinct. So what color, and texture are the shells because this effects their origin more than most scientist and layman know. What region were they found in?
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