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Author Question: A nerve block usually takes effect in about ________ minutes. a. 1 to 2 b. 3 to 4 c. 4 to 5 d. 8 ... (Read 21 times) |
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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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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There are more bacteria in your mouth than there are people in the world.