retrogression
61Soil — For other uses, see Soil (disambiguation). A represents soil; B represents laterite, a regolith; C represents saprolite, a less weathered regolith; the bottommost layer represents bedrock …
62Rutile — Wine red rutile crystals from Binn Valley, Switzerland (Size: 2.0 x 1.6 x 0.8 cm) General Category Oxide minerals …
63Crab canon — Crab canon.[1]  Play ( …
64Technological singularity — The technological singularity is a theoretical future point of unprecedented technological progress, caused in part by the ability of machines to improve themselves using artificial intelligence. [Harvtxt|Singularity Institute for Artificial… …
65Topic outline of agriculture — Agriculture, which encompasses farming, is the process of producing food, feed, fiber and other goods by the systematic raising of plants and animals. Agricultural developments have been crucial factors in social change, including the… …
66Geomorphology — (from Greek: γη, ge , earth ; μορφή, morfé , form ; and λόγος, logos , knowledge ) is the study of landforms and the processes that shape them. Geomorphologists seek to understand why landscapes look the way they do: to understand landform… …
67List of conservation topics — This is a list of conservation topics. It is a list of articles relating to conservation biology and conservation of the natural environment. NOTOC A*Abiotic stress Aerial seeding Agreed Measures for the Conservation of Antarctic Fauna and… …
68Economic development — is the development of economic wealth of countries or regions for the well being of their inhabitants. From a policy perspective, economic development can be defined as efforts that seek to improve the economic well being and quality of life for… …
69The Urantia Book —   Cover of the …
70Clement Greenberg — Birth name Clement Greenberg Born January 16, 1909(1909 01 16) New York City, New York, United States …
