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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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The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

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Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Lilly Martin Spencer’s Young Husband: First Marketing (1854). Note that passers-by are amused at thi Lilly Martin Spencer’s Young Husband: First Marketing (1854). Note that passers-by are amused at thi
Eleanor Roosevelt dispenses soup to the needy. As a wealthy young socialite, she exhibited little .. Eleanor Roosevelt dispenses soup to the needy. As a wealthy young socialite, she exhibited little ..
Nomogram chart. This example shows a line drawn from a child’s height of 100 cm to his weight, 35 ... Nomogram chart. This example shows a line drawn from a child’s height of 100 cm to his weight, 35 ...
Cataracts seen in a child with congenital rubella syndrome. Cataracts seen in a child with congenital rubella syndrome.
A representative karyotype and a photograph of a child A representative karyotype and a photograph of a child
Genetic polymorphism for foraging behavior in fruit fly larvae Genetic polymorphism for foraging behavior in fruit fly larvae
Video: What is Reverse Osmosis?

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