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Author Question: Which research method would likely be chosen when it is impractical to manipulate the variables of interest? (Read 43 times) |
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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
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Excessive alcohol use costs the country approximately $235 billion every year.
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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.