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Author Question: The ridge of oral mucosa that surrounds the base of a tooth is the A) vestibule. B) gingiva. C) ... (Read 75 times) |
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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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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Cyanide works by making the human body unable to use oxygen.
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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.