The period of the fetus begins at _____ and ends with _____, which takes about _____.
Asked by maham237 @ in Social Studies viewed by 298 People
The period of the embryo begins at _____ and ends with _____, which takes about _____.a) conception; birth; nine monthsb) the first trimester; implantation into the uterine wall; twelve weeksc) week 3; formation of bone cells; six weeksd) organogenesis; ossification; one trimester