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Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
People whose behaviors violate norms are often called mentally ill. “Why else would they do such ...
Five layers or sheaths called koshas in Ayurvedic philosophy.
A square matrix P is called a permutation matrix if each row and column of P contains exactly ...