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brucellosis
(Encyclopedia)brucellosis bro͞oˌsəlōˈsĭs [key] or Bang's disease, infectious disease of farm animals that is sometimes transmitted to humans. In humans the disease is also known as undulant fever, Mediterrane...bioluminescence
(Encyclopedia)bioluminescence bīˌōlo͞oˌmĭnĕsˈəns [key], production of light by living organisms. Organisms that are bioluminescent include certain fungi and bacteria that emit light continuously. The dinof...Galápagos Islands
(Encyclopedia)Galápagos Islands gəlăpˈəgōs [key] [Span.,=tortoises], archipelago and province, 3,029 sq mi ...aphid
(Encyclopedia)aphid or plant louse, tiny, usually green, soft-bodied, pear-shaped insect injurious to vegetation. It is also called greenfly and blight. Aphids are mostly under 1⁄4 in. (6 mm) long. Some are wingl...palm
(Encyclopedia)palm, common name for members of the Palmae, a large family of chiefly tropical trees, shrubs, and vines. Most species are treelike, characterized by a crown of compound leaves, called fronds, termina...estuary
(Encyclopedia)estuary ĕsˈcho͝oĕrˌē [key], partially enclosed coastal body of water, having an open connection with the ocean, where freshwater from inland is mixed with saltwater from the sea. One type of est...penicillin
(Encyclopedia)penicillin, any of a group of chemically similar substances obtained from molds of the genus Penicillium that were the first antibiotic agents to be used successfully in the treatment of bacterial inf...mass extinction
(Encyclopedia)mass extinction, the extinction of a large percentage of the earth's species, opening ecological niches for other species to fill. There have been at least ten such events. The five greatest were thos...mosquito
(Encyclopedia)mosquito məskēˈtō [key], small, long-legged insect of the order Diptera, the true flies. The females of most species have piercing and sucking mouth parts and apparently they must feed at least on...mouse
(Encyclopedia)mouse, name applied to numerous species of small rodents, often having soft gray or brown fur, long hairless tails, and large ears. The chief distinction between these animals and the variety of roden...Browse by Subject
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