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 can cause implantation bleeding, or spotting. The main difference between spotting and menstruation involves the amount of vaginal bleeding. Spotting is generally seen as intermittent discharge of blood, while periods are three to five days of vaginal bleeding.