â¦longevity of seeds, the dormant embryo plant contained within the seed will lose its viability (ability to grow) if germination fails to occur within a certain time. Reports of the sprouting of wheat taken from Egyptian tombs are unfounded, but some seeds do retain their viability a long time.
Implantation bleeding-Spotting during pregnancy may be caused by implantation. Implantation bleeding occurs after the egg burrows into the lining of the uterus. As the egg implants into the lining sometimes a little bit of bleeding will occur.
Pregnancy is one of the more common. Often referred to as implantation bleeding, vaginal spotting occurs in 20 to 30 percent of women during early pregnancy. Women can also experience spotting from normal ovulation and as a side effect of oral contraceptives, especially at the onset of use.