The chick uses the egg tooth is what the chick uses to crack the egg the amnion is a fluid sac around the embryo to protect it during growth the allantois are external organs it handles waste and gas exchange.
Temporary organs don't stay with the chick when it hatches like the allantoi the egg tooth and the amnion
Like the egg toth right
The egg is one of the most important thing of a chicks hatching because the chick needs the yolk for its strength to get out of the shell.
The legs are very important because when a chick is hatching it will use them to push there way out of the shell
The eye is the most important because it is the first thing to form after the body and te chick needs eyes to see
The eggs need to turn so each side of the chick gets strong from the heat the heat needs to be at least 100% in the incubator
The air around the incubator must be fertile so the chick can have fresh air to breath so they are safe