Humans are born much less well developed than most mammals. Why might this be?
A) The mother can't physically take a longer pregnancy.
B) Humans have such big brains, if the fetus grew any bigger the head wouldn't fit through the cervix.
C) Humans need special nurturing as babies.
D) The human placenta doesn't last long enough to support a longer pregnancy.
E) Probably no real reason, it's just the way it's worked out.
Correct Answer:
Verified
Q26: Babies born even a month early may
Q27: Approximately when might a mother-to-be be able
Q28: Why are contractions in labor necessary for
Q29: What does the hormone oxytocin contribute to
Q30: What triggers the process of labor and
Q32: What are the stages of labor and
Q33: When "water breaks" in the early stages
Q34: About what percentage of births are twins?
A)
Q35: How do identical twins occur?
A) One sperm
Q36: What is the difference between fraternal twins
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