unexplored+ground
21Mining methods of the Klondike Gold Rush — See also: Klondike Gold Rush, Mining Contents 1 During the Klondike Gold Rush (1896 1910) 1.1 Methods of bringing out the gold 1.1.1 Underground mining …
22Arctic ecology — is the scientific study of the relationships between biotic and abiotic factors in the arctic, the region north of theArctic Circle (66 33’). This is a region characterized by stressful conditions as a result of extreme cold, low precipitation, a …
23Alaska — Alaskan, adj., n. /euh las keuh/, n. 1. a state of the United States in NW North America. 400,481; 586,400 sq. mi. (1,519,000 sq. km). Cap.: Juneau. Abbr.: AK (for use with zip code), Alas. 2. Gulf of, a gulf of the Pacific, on the coast of S… …
24American Old West — Wild West redirects here. For other uses, see Wild West (disambiguation). For cultural influences and their development, see Western (genre). American Old West The …
25Arctic Regions — ▪ 2009 The Arctic regions may be defined in physical terms (astronomical [north of the Arctic Circle, latitude 66° 30′ N], climatic [above the 10 °C (50 °F) July isotherm], or vegetational [above the northern limit of the tree line]) or in human… …
26printmaking — /print may king/, n. the art or technique of making prints, esp. as practiced in engraving, etching, drypoint, woodcut or serigraphy. [1925 30; PRINT + MAKING] * * * Art form consisting of the production of images, usually on paper but… …
27Polar ecology — is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic regions are in the northern hemisphere, and it contains land and the islands that surround it. Antarctic is… …
28plant — plantable, adj. plantless, adj. plantlike, adj. /plant, plahnt/, n. 1. any member of the kingdom Plantae, comprising multicellular organisms that typically produce their own food from inorganic matter by the process of photosynthesis and that… …
29United States Marine Corps Aviation — Logo for USMC aviation United States Marine Corps Aviation is the air component of the United States Marine Corps. Marine aviation has a very different mission and operation than its ground counterpart, and thus, has many of its own histories,… …
30Anthropology and Archaeology — ▪ 2009 Introduction Anthropology Among the key developments in 2008 in the field of physical anthropology was the discovery by a large interdisciplinary team of Spanish and American scientists in northern Spain of a partial mandible (lower… …
