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Muskox populations remain in the Arctic all year, though they migrate to higher elevations in the wi
The anterior pituitary is sometimes called the master gland because it secretes many hormones that r
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
Head binding, or artificial deformation, was used by some populations as a sign of identity.
Don Gray, Stone #2, from the series Nine Stones.
The illusory bands visible in this figure are often called Mach bands, although Mach used a ...