your mom dude
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nothing
A type of egg is composed of a protective shell and membranes that surround the developing embryo is an egg
Reptiles were the first group whose eggs cushioned the embryo in fluid and protected it with membranes and a shell. This prevents eggs from drying out and allows them to be laid away from water.
The embryo of a chicken egg is right below the shell.
When embryo is in the egg shell,it gets all nutrients from the albumen that surrounds the yolk.But for the intake of oxygen and exhalation of CO2 there are many small pores in the shell which develop as it cools.This is because on cooling the internal material shrinks a bit and develops the hollow spaces.
The amniotic egg has seven different parts that play different functions. The seven parts include the shell, albumen, chorion, yolk, allantois, ammunion and embryo.
The answer is , The Shell.
Reptile eggs have shell membranes.
Any animal that hatches from a shell comes from an embryo. Actually any animal at all comes from an embryo. But the most common animal you would think of would be a chick.
It is to protect the embryo inside the egg.
It gives the embryo oxygen it needs to survive in the egg.
embryo