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Oceanic trench

The oceanic trenches are the deepest parts of the ocean floor, typically formed when one tectonic plate slides under another. Major world trenches include:



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Urethra

... control over urination. In the human female, the urethra is about 1-1.5 inches (25-38 mm) long and opens in the vulva between the clitoris and the vaginal opening. ...

 
 
 
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