break down covering of egg
The covering of an egg consists of two main layers: the outer shell and the inner membrane
The covering of an egg consists of two main layers: the outer shell and the inner membrane.
1. Outer shell:
The outer shell of an egg is made up of calcium carbonate. It is hard and provides protection for the delicate contents of the egg. The shell is porous, allowing gases and moisture to pass through. This exchange of gases is crucial for the development of the chick inside the egg.
The color of the eggshell depends on the breed of the bird and can range from white to various shades of brown.
2. Inner membrane:
Inside the shell, there are two transparent inner membranes that closely surround the egg white (albumen). These membranes are thin, flexible, and more delicate compared to the outer shell. Their primary function is to maintain the shape of the egg and protect the contents from bacterial invasion.
The inner membrane also plays an important role in retaining moisture and preventing evaporation from the egg.
Together, the outer shell and inner membranes provide a durable and protective covering for the developing embryo inside the egg. They help maintain the internal environment necessary for healthy development, while also safeguarding against potential external threats.
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