"Environmental hazards" include lead, mercury, and PCBs.
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Q12: Fetal movements are random and do not
Q13: DES is associated with cancer in the
Q14: During the embryonic stage, the zygote travels
Q15: Mother and fetus share one circulatory system;
Q16: Nearly one-third of all pregnancies result in
Q18: Pregnancies can be dated from the onset
Q19: Fetal alcohol syndrome (FAS) results in more
Q20: The amniotic fluid provides nourishment until the
Q21: The nails, hair, teeth, and outer layer
Q22: Before the end of the first month
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