oxygen generating plant
11bacteria — bacterial, adj. bacterially, adv. /bak tear ee euh/, n.pl., sing. bacterium / tear ee euhm/. ubiquitous one celled organisms, spherical, spiral, or rod shaped and appearing singly or in chains, comprising the Schizomycota, a phylum of the kingdom …
12List of Historic Mechanical Engineering Landmarks — The following is a list of Historic Mechanical Engineering Landmarks as designated by the American Society of Mechanical Engineers since it began the program in 1971. The designation is granted to existing artifacts or systems representing a… …
13Mir — This article is about the Soviet/Russian space station. For other uses, see Mir (disambiguation). Mir …
14Niagara Falls — For other uses, see Niagara Falls (disambiguation). Niagara Falls A view of th …
15Dates of 2008 — ▪ 2009 January As we meet tonight, our economy is undergoing a period of uncertainty.… At kitchen tables across our country, there is a concern about our economic future. U.S. Pres. George W. Bush, in his final state of the union address, January …
16Diazotroph — Diazotrophs are bacteria and archaea that fix atmospheric nitrogen gas into a more usable form such as ammonia.[1] A diazotroph is an organism that is able to grow without external sources of fixed nitrogen. Examples of organisms that do this are …
17Phototoxin — Phototoxins are toxins that can cause allergic reactions in particularly susceptible individuals and which can cause dangerous photosensitivity in a much broader range of subjects.Phototoxins are common in: *a variety of plants (including food… …
18Archaea — Archea redirects here. For the geologic eon, see Archean. For the spider family, see Archaeidae. Archaea Temporal range: Paleoarchean – Recent Halobacteria sp. strain NRC 1, each cell about 5 μm long …
19Calvin, Melvin — born April 8, 1911, St. Paul, Minn., U.S. died Jan. 8, 1997, Berkeley, Calif. U.S. biochemist. He received his Ph.D. from the University of Minnesota. He developed a system of using the radioactive isotope carbon 14 as a tracer element in his… …
20Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …
