Which part of the egg supplies oxygen to a young chick?

Answer 1

Inside the egg shell there are two membranes surrounding the yolk and albumen. A small amount of air is available within. The egg shell, even though it does not look like it, is porous and allows a small amount of air in and out. This air pocket is the reason eggs are incubated with the pointy end down. This allows for the maximum amount of air inside the shell to be collected and maintained within.