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Author Question: Extraneous variables affect change _____ groups and nuisance variables effect change _____ groups. ... (Read 85 times) |
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
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The longest a person has survived after a heart transplant is 24 years.