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Virgin Islands National Park
(Encyclopedia) Virgin Islands National Park, 14,689 acres (5,949 hectares), St. John, Virgin Islands; est. 1956. The park, with beaches, coves, and headlands, is rich in tropical-plant, animal, and…Thayer, Abbott Handerson
(Encyclopedia) Thayer, Abbott HandersonThayer, Abbott Handersonthâr [key], 1849–1921, American painter, b. Boston, studied in Paris with Gérôme and at the École des Beaux-Arts. Known as a painter of…radioimmunoassay
(Encyclopedia) radioimmunoassay (RIA), highly sensitive laboratory technique used to measure minute amounts of substances including antigens, hormones, and drugs present in the body. The substance or…cruelty, prevention of
(Encyclopedia) cruelty, prevention of. In the 19th cent. many laws were passed in Great Britain and the United States to protect the helpless, especially children, lunatics, and domestic animals,…blue whale
(Encyclopedia) blue whale, a baleen whale, Balaenoptera musculus. Also called the sulphur-bottom whale and Sibbald's rorqual, it is the largest animal that has ever lived. Blue whales have been known…saddle
(Encyclopedia) saddle, seat or pad to support the rider on an animal, chiefly a horse. The saddles mentioned in the Bible are generally considered to have been saddlecloths. The ancient Greeks…nitrogen cycle
(Encyclopedia) CE5 Nitrogen cycle nitrogen cycle, the continuous flow of nitrogen through the biosphere by the processes of nitrogen fixation, ammonification (decay), nitrification, and…Fourcroy, Antoine François, comte de
(Encyclopedia) Fourcroy, Antoine François, comte deFourcroy, Antoine François, comte deäNtwänˈ fräNswäˈ kôNt də f&oomacr;rkrwäˈ [key], 1755–1809, French chemist. He was a pioneer in animal and…Marler, Peter Robert
(Encyclopedia) Marler, Peter Robert, 1928–2014, British ethologist, b. Slough, England, Ph.D University College London, 1952, and Cambridge, 1954. At Cambridge he was introduced to the sonic…Mesmer, Friedrich Anton
(Encyclopedia) Mesmer, Friedrich AntonMesmer, Friedrich Antonfrēˈdrĭkh änˈtôn mĕsˈmər [key], or Franz Anton MesmerFranz Anton Mesmerfränts [key], 1734–1815, German physician. He studied in Vienna.…Trending
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