eggshell
来源:懂视网
责编:小OO
时间:2023-11-17 14:01:02
eggshell
Aneggshellistheoutercoveringofanegg.Itisthinandbrittle,andcanbewhiteorbrowndependingonthebreedoftheegg-layinganimal.Eggshellsarecomposedofcalciumcarbonate,whichisthesamematerialfoundinseashells,limestone,andchalk.Theyserveasaprotectivebarrierforthedevelopingembryoinsidetheeggandalsohelpregulatetheexchangeofgasesandmoisturewiththeoutsideenvironment.
导读Aneggshellistheoutercoveringofanegg.Itisthinandbrittle,andcanbewhiteorbrowndependingonthebreedoftheegg-layinganimal.Eggshellsarecomposedofcalciumcarbonate,whichisthesamematerialfoundinseashells,limestone,andchalk.Theyserveasaprotectivebarrierforthedevelopingembryoinsidetheeggandalsohelpregulatetheexchangeofgasesandmoisturewiththeoutsideenvironment.
![](https://img.51dongshi.com/20240412/wz/12498533952.jpg)
An eggshell is the outer covering of an egg. It is thin and brittle, and can be white or brown depending on the breed of the egg-laying animal. Eggshells are composed of calcium carbonate, which is the same material found in seashells, limestone, and chalk. They serve as a protective barrier for the developing embryo inside the egg and also help regulate the exchange of gases and moisture with the outside environment. Eggshells are often used for a variety of purposes such as gardening, crafting, and cooking.
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eggshell
Aneggshellistheoutercoveringofanegg.Itisthinandbrittle,andcanbewhiteorbrowndependingonthebreedoftheegg-layinganimal.Eggshellsarecomposedofcalciumcarbonate,whichisthesamematerialfoundinseashells,limestone,andchalk.Theyserveasaprotectivebarrierforthedevelopingembryoinsidetheeggandalsohelpregulatetheexchangeofgasesandmoisturewiththeoutsideenvironment.