A single brain cell can have over 10,000 connections to other brain cells.
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Fossils form when organisms are preserved in sediment over millions of years.
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Some fish can survive in near-freezing water.
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Stress hormones prepare the body for a fight-or-flight response.
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The invention of dialysis allows patients with kidney failure to survive.
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Your stomach replaces itself every few days.
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Ankylosaurus had a heavily armored body and a clubbed tail.
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An adult giraffe can clean its ears with its tongue.
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The Tyrannosaurus rex may have had excellent vision.
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