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Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i
In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism
Herbert Spencer (1820–1903), sometimes called the second founder of sociology, coined the term ...
The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
A square matrix P is called a permutation matrix if each row and column of P contains exactly ...