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 the first consideration in women of childbearing age who present with abnormal uterine bleeding (Table 1).7,8 Potential causes of pregnancy-related bleeding include spontaneous pregnancy loss (miscarriage), ectopic pregnancy, placenta previa, abruptio placentae, and trophoblastic disease.