Question

Once a female reaches puberty, the uterus sheds an unfertilized egg along with the _________ .

Answer 1

The asnwer is (egg cells)

Answer 2

This process is known as a menstrual period when the female body releases an unfertilized egg, uterine lining, as well as blood. I hope this helps :)
(P.s. answer is uterine lining)