(Encyclopedia) chief or chieftain, political leader of a band, tribe, or confederation of tribes. At the simpler levels of social organization, the band or tribe usually lacks centralized authority…
(Encyclopedia) geoduckgeoduckg&oomacr;ˈēdŭkˌ [key], common name of a Pacific clam, Panope generosa. The largest intertidal burrowing bivalve in the world, the geoduck may weigh up to 12 lb (5.4…
(Encyclopedia) sea slug, name for a marine gastropod mollusk that lacks a shell as an adult and is usually brightly colored. Sea slugs, or nudibranchs, are distributed throughout the world, with the…
(Encyclopedia) Australian languages, aboriginal languages spoken on the continent of Australia. The Australian languages do not appear to be related to any other linguistic family. The exact number…
(Encyclopedia) paper nautilus or argonaut, pelagic, surface-dwelling cephalopod mollusk of the genus Argonauta. Like the closely related octopus, the paper nautilus has a rounded body, eight…
(Encyclopedia) belugabelugabəl&oomacr;ˈgə [key] or white whale, small, toothed northern whale, Delphinapterus leucas. The beluga may reach a length of 19 ft (5.8 m) and a weight of 4,400 lb (2,…
(Encyclopedia) Marie de' MediciMarie de' Medicimĕdˈĭchē [key], 1573–1642, queen of France, second wife of King Henry IV and daughter of Francesco de' Medici, grand duke of Tuscany. She was married to…
HEART DISEASE INFECTIOUS DISEASES CANCER FIND OUT MORE
When a person has a disease, a part of that person’s body fails to function properly. Diseases produce different patterns of…
The Respitory SystemAnatomy and PhysiologyThe Respitory SystemLungs, Bronchi, Trachea, NosePharynxMore Than Just a PipeGas Laws and BreathingVolumes and Volumes It's interesting how many…
