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Author Question: After nitrogen and oxygen, the major constituent of the air is______________. Fill in the blank(s) ... (Read 21 times) |
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.