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.
Some examples of causes of bleeding during pregnancy that may be mistaken for a period while pregnant include cervical changes, sex, placenta problems, carrying multiples, and infection. You can read about these in more detail in the posts link at the beginning of this article for bleeding during a confirmed pregnancy.