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.
1 Sex. 2  More blood flows to your cervix during pregnancy, so it's not unusual to notice spotting after intercourse. 3  A cervical polyp (a benign growth on the cervix) can also cause spotting or bleeding after sex. 4  Pap smear or internal exam.