superficial runoff
11United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
12Noachian — MOLA colorized relief map of Noachis Terra, the type area for the Noachian System. Note the superficial resemblance to the lunar highlands. Colors indicate elevation, with red highest and blue violet lowest. The blue feature at bottom right is… …
13Tiempo de concentración — El tiempo de concentración tc de una determinada cuenca hidrográfica es el tiempo necesario para que el caudal saliente se estabilice, cuando la ocurrencia de una precipitación con intensidad constante sobre toda la cuenca.[1] Para áreas pequeñas …
14Michael E. Arth — Born April 27, 1953 (1953 04 27) (age 58) Burtonwood, Lancashire, U.K. N …
15Syncaris pacifica — Taxobox name = Syncaris pacifica status = EN | status system = IUCN2.3 regnum = Animalia phylum = Arthropoda subphylum = Crustacea classis = Malacostraca ordo = Decapoda infraordo = Caridea familia = Atyidae genus = Syncaris species = S.pacifica… …
16Irrigation in Mexico — Mexico has a total land area of 2 million square kilometres and it is classified as an arid and semi arid country. The agricultural sector plays an important role in the economic development of the country accounting for 8.4 of agricultural gross …
17Arizona — Arizonan, Arizonian /ar euh zoh nee euhn/, adj., n. /ar euh zoh neuh/, n. a state in SW United States. 2,717,866; 113,909 sq. mi. (295,025 sq. km). Cap.: Phoenix. Abbr.: AZ (for use with zip code), Ariz. * * * State (pop., 2000: 5,130,632),… …
18earth — /errth/, n. 1. (often cap.) the planet third in order from the sun, having an equatorial diameter of 7926 mi. (12,755 km) and a polar diameter of 7900 mi. (12,714 km), a mean distance from the sun of 92.9 million mi. (149.6 million km), and a… …
19Europe — /yoor euhp, yerr / for 1; /yoo roh pee, yeuh / for 2, n. 1. a continent in the W part of the landmass lying between the Atlantic and Pacific oceans, separated from Asia by the Ural Mountains on the E and the Caucasus Mountains and the Black and… …
20Acid rain — is rain or any other form of precipitation that is unusually acidic. It has harmful effects on plants, aquatic animals, and infastructure. Acid rain is mostly caused by human emissions of sulfur and nitrogen compounds which react in the… …
