Answer:
the chorion, the allantoids, the amnion and the yolk sac.
Explanation:
The amniotic egg has four layers. All of these layers are enclosed by a shell
The chorion helps for gas exchange. It's the layer that covers the whole embryo
The allantoid is a sac that helps with gas exchange but also is the one that encloses the wastes of the embryo during the development into the egg, one analogy is with the garbage bag, where all the waste is lookup
The amnion is the layer that protects the embryo, is like a jacket that surrounds the embryo
The yolk sac is the one that has the nutrients that are necessary for the embryo throughout all the development. It is like a lunch box for the embryo
