Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.
The HTTP 404, 404 Not Found, 404, Page Not Found, or Server Not Found error message is a Hypertext Transfer Protocol (HTTP) standard response code, in computer network communications, to indicate that the browser was able to communicate with a given server, but the server could not find what was requested.
The Economic Community of West African States, also known as ECOWAS, is a regional economic union of fifteen countries located in West Africa. Collectively, these countries comprise an area of 5,114,162 km2 (1,974,589 sq mi), and in 2015 had an estimated population of over 349 million.
Activision Publishing, Inc. is an American video game publisher based in Santa Monica, California. It currently serves as the publishing business for its parent company, Activision Blizzard, and consists of several subsidiary studios. Activision is one of the largest third-party video game publishers in the world and was the top United States publisher in 2016.
Gun control is the set of laws or policies that regulate the manufacture, sale, transfer, possession, modification, or use of firearms by civilians.
In geography, the temperate or tepid climates of Earth occur in the middle latitudes, which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout the year and more distinct seasonal changes compared to tropical climates, where such variations are often small. They typically feature four distinct seasons, Summer the warmest, Autumn the transitioning season to Winter, the colder season, and Spring the transitioning season from winter back into summer. On the northern hemisphere the year starts with winter, transitions in the first halfyear through spring into summer which is in mid-year, then at the second halfyear through autumn into winter at year-end. On the southern hemisphere seasons are swapped with summer in between years and winter in mid-year.
In physical geography, a steppe is an ecoregion, in the montane grasslands and shrublands and temperate grasslands, savannas and shrublands biomes, characterized by grassland plains without trees apart from those near rivers and lakes. The prairie of North America is an example of a steppe, though it is not usually called such. A steppe may be semi-arid or covered with grass or shrubs or both, depending on the season and latitude. The term is also used to denote the climate encountered in regions too dry to support a forest but not dry enough to be a desert. The soil is typically of chernozem type.
Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids than they are to shelled nautiloids such as the living Nautilus species. The earliest ammonites appear during the Devonian, and the last species died out in the Cretaceous–Paleogene extinction event.
An academy is an institution of secondary education, higher learning, research, or honorary membership. Academia is the worldwide group composed of professors and researchers at institutes of higher learning.
New Found Glory is an American rock band from Coral Springs, Florida, formed in 1997. The band currently consists of Jordan Pundik, Ian Grushka, Chad Gilbert, and Cyrus Bolooki (drums). Longtime rhythm guitarist and lyricist Steve Klein departed from the band in late 2013, following "personal differences." During their lengthy recording career, the band have released nine studio albums, one live album, two EPs, and three cover albums.
Cave paintings are a type of parietal art, found on the wall or ceilings of caves. The term usually implies prehistoric origin, but cave paintings can also be of recent production: In the Gabarnmung cave of northern Australia, the oldest paintings certainly predate 28,000 years ago, while the most recent ones were made less than a century ago.
Connective tissue (CT) is one of the four basic types of animal tissue, along with epithelial tissue, muscle tissue, and nervous tissue. It develops from the mesoderm. Connective tissue is found in between other tissues everywhere in the body, including the nervous system. In the central nervous system, the three outer membranes that envelop the brain and spinal cord are composed of connective tissue. They support and protect the body. All connective tissue consists of three main components: fibers, ground substance and cells. Not all authorities include blood or lymph as connective tissue because they lack the fiber component. All are immersed in the body water.
Earwigs make up the insect order Dermaptera. With about 2,000 species in 12 families, they are one of the smaller insect orders. Earwigs have characteristic cerci, a pair of forceps-like pincers on their abdomen, and membranous wings folded underneath short, rarely used forewings, hence the scientific order name, "skin wings". Some groups are tiny parasites on mammals and lack the typical pincers. Earwigs are found on all continents except Antarctica.
A friar is a brother member of one of the mendicant orders founded in the twelfth or thirteenth century; the term distinguishes the mendicants' itinerant apostolic character, exercised broadly under the jurisdiction of a superior general, from the older monastic orders' allegiance to a single monastery formalized by their vow of stability. The most significant orders of friars are the Dominicans, Franciscans, Augustinians and Carmelites.
Marmots are large squirrels in the genus Marmota, with 15 species.
The Founding Fathers of the United States, or simply the Founding Fathers, were a group of American leaders who united the Thirteen Colonies, led the war for independence from Great Britain, and built a Frame of Government for the new United States of America upon republican principles during the latter decades of the 18th century. Most Founding Fathers at one point considered themselves British subjects; but they came to understand themselves more as patriotic Americans who possessed a spirit distinct from that of their motherland. The group was composed of businessmen, philosophers, politicians, plantation owners and writers from a variety of social, economic, and ethnic backgrounds. The Founding Fathers came from a variety of occupations, and many were not colonial politicians before.
The Holarctic is the name for the biogeographic realm that encompasses the majority of habitats found throughout the northern continents of the world, combining Wallace's Palearctic zoogeographical region, consisting of North Africa and all of Eurasia, and the Nearctic zoogeographical region, consisting of North America, north of Mexico. These regions are further subdivided into a variety of ecoregions. Many ecosystems, and the animal and plant communities that depend on them, are found across multiple continents in large portions of this realm. The continuity of these ecosystems results from the shared glacial history of the realm. The floristic Boreal Kingdom corresponds to the Holarctic realm.
A chivalric order, order of chivalry, order of knighthood or equestrian order is an order, confraternity or society of knights typically founded during or inspired by the original Catholic military orders of the Crusades, paired with medieval concepts of ideals of chivalry.
The name Moscow Ballet has commonly been applied to a number of different ballet companies, which include:
