Answer:it begins at conception
Ans terminated at birth.
The entire period takes 9months.
Conceptions begins with the fertilization of the sperm with the Oocyte.It is followed with the implanta tion of tje EMBRYO on the walls of the uterus for supply of needed nutrients and removal of wastes by the mother.The tissues that does this are called collectivly the PLACENTA
Detachment of the placenta from the mother signified labor.
Explanation:
