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Author Question: How many orbitals are there in the fourth shell? (Read 33 times) |
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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.