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.
Common Skin Conditions Linked to Pregnancy. Hyperpigmentation: This condition is a darkening of the skin and is caused by an increase in melanin, the substance in the body that is responsible for color (pigment). Pregnancy causes excess melanin production. Melasma (also known as chloasma): Melasma is a form of hyperpigmentation.