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Author Question: When a layer or warm air is trapped between layers of cool air above and below, it illustrates A) ... (Read 17 times) |
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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There are approximately 3 million unintended pregnancies in the United States each year.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.