A deficiency of which nutrient will interfere with the proper development of the neural tube?
a. vitamin A
b. vitamin D
c. vitamin C
d. vitamin B12
e. folic acid
ANSWER: e
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What will be an ideal response?
The range of a population
A. changes over time due to external events. B. is stable and almost never changes. C. only changes after a disaster has wiped out a former range. D. is very fluid and changes frequently in a random fashion. E. only changes due to iteroparity.
The membrane attack complex is a part of the _______ system.
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