The vanishing twin phenomenon refers to
a. the fact that more triplets and quadruplets are being born because of fertility drugs.
b. the disappearance of embryos within 13 weeks of conception.
c. the decreasing percentage of dizygotic twins in favor of monozygotes.
d. None of the above
b
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What sweetener is associated with Clostridium botulinum and is a risk to children under 1 year of age?
A. agave nectar B. invert sugar C. molasses D. honey E. maple syrup
Which vitamin is most important for preserving bone health in athletes?
A. Iron B. Vitamin E C. Vitamin C D. Vitamin D
Someone experiencing significant blood losses would benefit from which of the following supplements?
A) Zinc B) Chromium C) Selenium D) Iron
Experts recommend that the type of water which Americans should drink and which benefits the environment is
A) distilled water. B) enhanced water. C) tap water. D) mineral water.