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Kinds of Lemmings
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Lemming, any of several small rodents, family Cricetidae (order Rodentia), found primarily in north temperate and polar regions of North America and Eurasia.
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Blood Test Lab-on-a-Chip
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A team of researchers from Caltech (California Institute of Technology) have developed a micro-sized laboratory capable of analyzing minute blood samples to determine the exact levels of red and white blood cells as well as other blood components. The research, funded by NASA, was aimed at creating a small device capable of performing simple blood tests in space for astronauts of the future.
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Blister beetle
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Blister beetle, common name for the 2,000 species of the family Meloidae (order Coleoptera). These insects secrete an irritating substance, called cantharidin, which is collected mainly from Mylabris and the European species Lytta vesicatoria, commonly called the Spanish fly; cantharidin is sold commercially for medical purposes.
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Plover
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Plover, plump-breasted bird of the shorebird family Charadriidae (order Charadriiformes), related to surfbirds, turnstones, and lapwings. There are about three dozen species of plovers, 15 to 30 centimetres (6 to 12 inches) long, with long wings, moderately long legs, short necks, and straight bills that are shorter than their heads.
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Plague
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plague, term formerly applied to any widespread disease causing a great mortality but now confined to a specific infectious fever caused by the bacillus Pasteurella pestis, transmitted by the rat flea. It is primarily a disease of rodents, and epidemics in human beings originate in contact with the fleas of infected rodents.
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Hippopotamus
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Hippopotamus (Hippopotamus amp hi bi us) amphibious African mammal of the family Hippopotan’iidae (order Artiodactyla).
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plant bug
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plant bug, common name for two families of the insect order Heteroptera, The family Lygaeidae (see lygaeid bug) contains around 3,000 species. One of the important members, the chinch bug (q.v.), is an important crop pest.
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Tortoise
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Tortoise, common name for any of the land- dwelling turtles of the family Testudinidae; in Great Britain the term refers to any nonmarine turtle.
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Article on bird-watching
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bird-watching, the observation of live birds in their natural habitat, a popular pastime and scientific sport that has developed almost entirely in the 20th century. In the 19th century almost all students of birds used guns and could identify an unfamiliar species only when its corpse was in their hands. Modern bird- watching was made possible largely by the development of optical aids, particulariy binoculars, which enabled people to see and study wild birds, without harming them, better than ever before.
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