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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.