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Western Sahara

(Encyclopedia)CE5 Western Sahara, territory (2015 est. pop. 526,000), 102,703 sq mi (266,000 sq km), NW Africa, occupied by Morocco. It borders on the Atlantic Ocean in the west, on Morocco in the north, on Alge...

lighting

(Encyclopedia)CE5 Incandescent lamp CE5 Basic fluorescent lamp lighting, light produced by artificial means to allow visibility in enclosures and at night. For stage lighting, see scene design and stage ligh...

earthquake

(Encyclopedia)CE5 Worldwide pattern of earthquake activity: The dots indicate the epicenters of all earthquakes recorded during a recent 10-year period. CE5 earthquake, trembling or shaking movement of the ea...

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...

mint, in botany

(Encyclopedia)CE5 Spearmint Mentha spicata mint, in botany, common name for members of the Labiatae, a large family of chiefly annual or perennial herbs. Several species are shrubby or climbing forms or, rarely...

reflection

(Encyclopedia)CE5 Image formation by curved mirrors and lenses reflection, return of a wave from a surface that it strikes into the medium through which it has traveled. The general principles governing the ref...

violin

(Encyclopedia)CE5 Violins and viols violin, family of stringed musical instruments having wooden bodies whose backs and fronts are slightly convex, the fronts pierced by two ƒ-shaped resonance holes. The instr...

grass

(Encyclopedia)CE5 Edible grasses grass, any plant of the family Poaceae (formerly Gramineae), an important and widely distributed group of vascular plants, having an extraordinary range of adaptation. Numbering...

Prince Edward Island

(Encyclopedia)CE5 Prince Edward Island, province (2001 pop. 135,294), 2,184 sq mi (5,657 sq km), E Canada, off N.B. and N.S. The Mi'kmaq lived on the island before Europeans arrived. Jacques Cartier wrote ent...

pulse, in botany

(Encyclopedia)CE5 Sweet pea, Lathyrus odoratus, a member of the pulse family pulse, in botany, common name for members of the Fabaceae (Leguminosae), a large plant family, called also the pea, or legume, family...