The period from conception to birth normally lasts ________ weeks.
A) 30
B) 34
C) 38
D) 42
Correct Answer:
Verified
Q3: Your sister is pregnant and wonders how
Q7: Once implantation is complete, the developing organism
Q10: The ectoderm will become
A)the arms and legs.
B)hair,
Q10: Amy doesn't know it yet, but she
Q12: Your friend,Marie,is pregnant and wants to learn
Q13: When a zygote burrows into the uterine
Q15: Near the center of a zygote is
Q18: The developing organism is called an embryo
A)
Q18: Implantation of the fertilized egg into the
Q19: Three layers, called the ectoderm, the mesoderm,
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