no
No. The egg must be fertile, and being in the refrigerator for too long will kill any embryos. Eggs that are sold for consumption are never fertile, unless bought locally. Without a rooster the eggs will not be fertile, and batteries do not keep roosters, as roosters are not necessary for a hen to lay eggs.
It is the illegal "sport" of fighting roosters and betting on them. It is outlawed in most or all states as being cruel to the roosters.
Both are chickens.They both have feathers.
Stride length, all else being equal.
Certainly they can. Without any external stimulation from their own kind the roosters natural display tendencies will be lessened.
Men do not stop being fertile, Women stop when they pass though the "menopause".
The focal length of a single concave mirror affects the formation of an image by determining the distance at which the image is formed. A shorter focal length results in the image being formed closer to the mirror, while a longer focal length results in the image being formed farther away.
No, not all chickens are female. Chickens can be male or female, with females being called hens and males being called roosters.
Depends on the individual injury. Roosters are capable of inflicting serious harm with their spurs.
Permeability
No. Steers are infertile, no matter what kind of steers they are, because they have been castrated to prevent them from being fertile in the first place (hence, being bulls).
Yes they do. The list is long. Anything that eats meat and lives in the same area. Roosters protect the hens so if a hen sounds the alarm the rooster will run to her and often ends up being the meal.