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DK Science: Courtship

COLOURFUL PLUMAGEMOCK DUALBONDING THROUGH GROOMINGMATING CALLSANOLE LIZARDRUTTING RED DEERLEAVING A SCENTFIND OUT MORESome animals perform complex rituals to attract a mate. These displays,…

The Common Cold

Source: National Institute of Allergy and Infectious Diseases, National Institutes of Health. The problem. In the course of a year, individuals in the United States suffer one billion colds,…

mink

(Encyclopedia) mink, semiaquatic carnivorous mammal of the genus Mustela, closely related to the weasel and highly prized for its fur. One species, Mustela vison, is found over most of North America…

hail, in meteorology

(Encyclopedia) hail, precipitation in the form of pellets composed of ice or of ice and snow, occurring at any time of the year, usually during the passage of a cold front or during a thunderstorm.…

plastic surgery

(Encyclopedia) plastic surgery, surgical repair of congenital or acquired deformities and the restoration of contour to improve the appearance and function of tissue defects. Development of this…

Mi'kmaq

(Encyclopedia) Mi'kmaq or Micmac, Native North Americans whose language belongs to the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American languages). They inhabit Nova…