a week
The egg, 1st of all because there were eggs long before birds, but if you mean a chicken's egg then it is still the egg. This is because when a new species evolves, the egg is say, given birth to a sub-chicken, and the new species (chicken) is inside the egg, which is techically now a chicken's egg.
Nothing, as long as it is not rotten, it is just like eating a chicken egg. A chicken is a bird.
egg of chicken
The egg. Dinosaurs laid eggs long, long before chickens existed.
The egg came first... kind of. Basically, a long, long time ago two birds that weren't really chickens created the first chicken egg.
It takes 21 days for a chicken egg to hatch.
30 Min
About 2-3 weeks
it should be 90 degrees centagrade
never
An unfertilized chicken egg that is not collected and refrigerated will eventually start to decay. You can put the egg in a glass of water, if it sinks to the bottom then it is still fresh.
it usually takes 24 days