C) trying new recipes
D) flavor additives
During the period of the embryo, the __________ becomes the __________.
A) mesoderm; nervous system, lungs, internal organs, and skin
B) chorion; endocrine system, muscles, placenta, and skeleton
C) ectoderm; circulatory system, skin, skeleton, and internal organs
D) endoderm; digestive system, lungs, urinary tract, and glands
The longest stage of labor is the
A) second, delivery of the baby.
B) first, delivery of the placenta.
C) third, delivery of the placenta.
D) first, dilation and effacement of the cervix.