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.
Spotting is relatively common: As many as 1 in 4 pregnant women spot in the first trimester. Some pregnant women notice light spotting, called implantation bleeding, around the time their period is due, and this is one early sign of pregnancy.