(Encyclopedia) energy, sources of, origins of the power used for transportation, for heat and light in dwelling and working areas, and for the manufacture of goods of all kinds, among other…
(Encyclopedia) immunosuppressive drug, any of a variety of substances used to prevent production of antibodies. They are commonly used to prevent rejection by a recipient's body of an organ…
(Encyclopedia) fossil, remains or imprints of plants or animals preserved from prehistoric times by the operation of natural conditions. Fossils are found in sedimentary rock, asphalt deposits, and…
(Encyclopedia) Normans, designation for the Northmen, or Norsemen, who conquered Normandy in the 10th cent. and adopted Christianity and the customs and language of France. Abandoning piracy and…
(Encyclopedia) exile, removal of a national from his or her country, or the civilized parts of it, for a long period of time or for life. Exile may be a forceful expulsion by the government or a…
(Encyclopedia) games, children's, amusements or pastimes involving more than one child and in which there is some sort of formalized dramatic element, contest, or plot. Games are a cultural universal…
(Encyclopedia) DNA fingerprinting or DNA profiling, any of several similar techniques for analyzing and comparing DNA from separate sources, used especially in law enforcement to identify suspects…
(Encyclopedia) insecticides, chemical, biological, or other agents used to destroy insect pests; the term commonly refers to chemical agents only.
The liabilities of chemical insecticides have…
(Encyclopedia) syphilissyphilissĭfˈəlĭs [key], contagious sexually transmitted disease caused by the spirochete Treponema pallidum (described by Fritz Schaudinn and Erich Hoffmann in 1905). Syphilis…
(Encyclopedia) mole, in zoology, common name for the small, burrowing, insectivorous mammals of the family Talpidae, found throughout the temperate Northern Hemisphere. Moles are trapped as pests,…
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