About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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There are more bacteria in your mouth than there are people in the world.
The life cycle of a flowering plant, illustrated by the genus Polygonum
Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
O2 Cycle
Help me please!!! The Menstrual Cycle
Linking step between glycolysis and the Krebs cycle.