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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 denitrification. Nitrogen...lichen
(Encyclopedia)lichen līˈkən [key], usually slow-growing organism of simple structure, composed of fungi (see Fungi) and photosynthetic green algae or cyanobacteria living together in a symbiotic relationship and...olive
(Encyclopedia)olive, common name for the Oleaceae, a family of trees and shrubs (including climbing forms) of warm temperate climates and of the Old World tropics, especially Asia and the East Indies. Many are popu...moss, in botany
(Encyclopedia) CE5 Life cycle of a moss: A germinating spore forms a transitory branching structure on the soil surface, which develops into the conspicuous gametophyte, the familiar moss plant. Eggs and sperm ar...boa
(Encyclopedia)boa bōˈə [key], name for live-bearing constrictor snakes of the family Boidae, found mostly in the Americas. This family, which also comprises the egg-laying pythons of the Old World, includes the ...Purdy, James Otis
(Encyclopedia)Purdy, James Otis, 1914–2009, American writer, b. near Hicksville, Ohio; studied Bowling Green State College (B.A., 1935), Univ. of Chicago (M.A., 1937), Univ. of Pueblo, Mexico. Idiosyncratic and a...sweet pea
(Encyclopedia)sweet pea, annual climbing plant (Lathyrus odoratus) of the family Leguminosae (pulse family), a legume native to S Europe but, since its introduction to horticulture c.1700, widely cultivated for its...Tandy, James Napper
(Encyclopedia)Tandy, James Napper, 1740–1803, Irish revolutionary. Originally a small tradesman in Dublin, he gained attention by his attacks on municipal corruption and his proposal to boycott English goods as a...katydid
(Encyclopedia)katydid, common name of certain large, singing, winged insects belonging to the long-horned grasshopper family (Tettigoniidae) in the order Orthoptera. Katydids are green or, occasionally, pink and ra...Greensburg
(Encyclopedia)Greensburg. 1 City (2020 pop. 14,976), seat of Westmoreland co., SW Pa.; settled c.1770, inc. as a city 1928. Located in a coal area, the city ...Browse by Subject
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