ewan! Sagutin mo yan! tanong mo sa nanay mo
The developing embryo takes its nourishment from the yolk inside the egg. The embryo doesn't need air until it is ready to break out of its shell.
The developing chick inside the egg needs air once its lungs develop, this reserve air sac allows the chick to breathe and gives them room to maneuver when it is time to peep (break out of the shell).
The lungs of the developing chick are not formed or functioning until day 19 of incubation. The use of the albumen within the shell for the embryo allows room for air to gather as absorbed by the porous shell. That small amount of air is enough for the chick to use until the egg tooth opens the shell. This is one reason a double yolk egg fails to fully develop.
When the baby chicks are developing in the egg shell, they need to breathe. The pores in the egg shell allows an exchange of good air with the bad air. A side effect to this. The pores allow moisture to escape from inside of the egg.
An egg can float in water if it is not fresh because as the egg ages, it loses moisture and air enters the shell, increasing its buoyancy. This causes the egg to float due to the air pocket inside it.
Air Shell is a shell is air in it.....duhhh
The interior thermal shell is the inside of a cabinet (a refrigerator, or the like) that preserves the coldness and keeps the cold air inside it.
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.
Like all embryos, a chicken in the egg does not require air to breathe until such time (approximately day 19) when their lungs develop enough to use the small amount they need. When it is first laid, the egg is full of yolk and albumen. At that time there is no air space as it is not required. The egg shell is porous. Moisture is lost through the shell over time and the moisture is replaced by air. When we breed chickens on the farm, we keep the small end of the egg up so the air collects above the developing chick. This air will be used by the fully formed chick inside the egg while it "PIPS" its way out of the shell at day 21.
No, not advisable.
So the growing chick inside gets air to breathe.
It has nothing inside of it...it has no air and no one can live inside of the moon..It isn't a thin shell with nothing in it! It's just rock, stone and dust compacted by gravity.