When the egg is really hard, you know that Its been in there for a long period of time and, that its kindof heavy.
There is no definite answer to an unborn chick's gender, even if you candle the egg. Some breeds, you can't even tell until it lays an egg.
There will be kind of pocket in the egg which contains enough oxygen for the chick to breathe in the egg for 21 days.
The developing chick feeds on the yolk sac, much like the baby of live bearing animals attaches to the placenta. The chick has enough nutrients when born to got 24 hours without beginning on chick starter.
There is no difference.
They don't. The chick inside the egg opens it from inside when it has grown enough
The yolk of the egg is food stored for the chick during its growth.
to protect the chick inside
When a bird's egg is fertilized, a chick is developing inside.
A young chick develops inside the egg and can be hatched naturally or through hatcheries. The young chick depends on the egg yolk for nutrients.
You can explain to the child that a food egg, like the ones we eat, comes from a hen and is just an egg that doesn't have a baby chick inside. In contrast, a baby chick egg has a tiny chick developing inside it, which will eventually hatch into a baby chicken if it is kept warm and safe. So, one is for eating, while the other is for growing a new chick!
albumin egg white
Living the chick grows inside the egg doesn't it?