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How to Make a Seashell - Just Add Water!
Key Facts In This Video
Sea snails build their shells by pulling calcium and carbonate out of the surrounding water, forming solid calcium carbonate. 00:06
The upper part of the ocean is saturated with calcium and carbonate, which is why it's ideal for shell-building. 01:15
An excess of CO2 from the atmosphere can change the dissolving depth at which shells break apart. 02:21
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