Air Shell is a shell is air in it.....duhhh
thin air
The density of the shell contents. Fresh eggs have very little air within the shell. While the shell does not appear so, it is very porous and as moisture leave the shell interior, it is replaced by air. The older the egg, the bigger the air bubble within.
cause in the egg-shell there is air ! !
the atmosphere
If you mean an egg in the shell, there is a small amount of air in the shell along with the egg. That acts as a float.
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.
A sea shell is a natural insulator because it contains minerals and air pockets that hinder the flow of electricity through it.
The have solid exoskeletons which cannot grow larger, unless they split their shell and expand into a larger shell, which hardens on contact with the air.
It is a bubble
The large end or "air chamber"
Air soft shotgun shells are the size of 12 gauge shotgun shells.
Turtles have a slow metabolism so if it is a large wound, the turtle may not recover. Small holes and cracks in the shell can heal but the shell will always carry the scar. Treat the wound as you would any other wound. Clean it with an antibiotic and keep it dry until it seals over. One thing to bear in mind is that turtles pump air into and out of their lungs by flexing the muscles at the openings of their shell. If the hole lets the air leak into the shell, the turtle will suffocate because it will cause the lungs to collapse. An air-tight patch over the hole might work but you would need to remove the air that already leaked in. That is a job for a vet.