destruction of the ozone layer
51organohalogen compound — Introduction any of a class of organic compounds (organic compound) that contain at least one halogen (halogen element) ( fluorine [F], chlorine [Cl], bromine [Br], or iodine [I]) bonded to carbon. They are subdivided into alkyl, vinylic, aryl,… …
52Nature — This article is about the physical universe. For other uses, see Nature (disambiguation). Natural and Natural World redirect here. For other uses, see Natural (disambiguation). See also: Natural environment Hopetoun Falls, Australia …
53Antarctica — AntarcticaThe Argentine, British and Chilean claims all overlap, and have caused friction. Australia claims the largest area.Countries interested in participating in a possible territorial division of AntarcticaThis group of countries… …
54Rowland , Frank Sherwood — (1927–) American chemist Born in Delaware, Ohio, Rowland was educated at Wesleyan University, Ohio, and at the University of Chicago, where he gained his PhD in 1952. After holding teaching posts at Princeton and Kansas, Rowland moved to the… …
55CONSERVATION — Introduction In consequence of the establishment in Israel of a Ministry for the Environment it is appropriate to take stock of the deep concern for the environment and its conservation which, from its earliest documents onwards, infuses Jewish… …
56Timeline of environmental events — Expand list|date=August 2008The timeline of environmental events is a historical account of events that have shaped humanity s perspective on the environment. This timeline includes some major natural events, human induced disasters,… …
57Anoxic event — As early as 1911, major oceanic currents were well mapped and understood, albeit without today s understanding of how they affect regional and global climatological conditions …
58List of G.I. Joe: A Real American Hero characters: M-R — This is an alphabetical List of G.I. Joe: A Real American Hero characters whose code names start with the letters M R. Contents 1 Mace 2 Mainframe 3 Major Altitude …
59List of apocalyptic and post-apocalyptic fiction — This is a list of apocalyptic and post apocalyptic fiction works, sorted by the nature of the catastrophe portrayed.World War III and other apocalyptic wars (between humans)Films1930s*1936. Things to Come , in which an extended future second… …
60Mountain yellow-legged frog — Conservation status Endangered (IUCN 3 …
