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Author Question: Which of the following is a positive ion? A) Na+ B) Ca2+ C) Mg2+ D) Al3+ E) all of the ... (Read 95 times) |
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Vaccines prevent between 2.5 and 4 million deaths every year.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.
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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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There are approximately 3 million unintended pregnancies in the United States each year.