The finger can be reattached if the veins, arteries and nerves aren't damaged. Rougly 12hours.
The supraosseous connective tissue attachment is surgically severed around the involved teeth. Where there are adjacent teeth, the transseptal fiberotomy of a single tooth will involve a minimum of three teeth. Since the incisions are within the gingival sulcus and tissue and the root surface is not instrumented, this procedure heals by the reunion of connective tissue with the root surface on which viable periodontal tissue is present (reattachment).
Kenya
No
No
block answering
Thousands of years.
According to MANswers, A severed Limb can be Re-attached after 1 hour its Perfectly able to Attach, after 4 hours tissue begins to deteriorate, in a cooler with ice but not in contact with the ice in about 40 degrees F. It will be viable for up to 4 days.
It depends on the animal in question. A viable population will ensure that there are enough individuals to ensure the population will remain in a viable condition for a given period of time. Some scientists hold to the belief that a minimum viable population of 50-500 individuals will ensure the sustainment of the population over time.
Anthrax
The human ovum can remain viable for about 48 hours. And sperm about 24 hours.
chickenpox. it may cause shingles later in life
If you mean seed packages, its because seeds are less likely to germinate after the expiration date. Some seeds can remain viable for centuries if they are kept in a cool, dry place, and other seeds are only viable for a shorter period of time.