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Crosswordese is the group of words frequently found in US crossword puzzles but seldom found in everyday conversation. The words are usually short, three to five letters, with letter combinations which crossword constructors find useful in the creation of crossword puzzles, such as words that start and/or end with vowels, abbreviations consisting entirely of consonants, unusual combinations of ...
The Cretaceous–Paleogene (K–Pg) extinction event, [ a ] also known as the Cretaceous–Tertiary(K–T)extinction, [ b ] was the mass extinction of three-quarters of the plant and animal species on Earth [ 2 ][ 3 ] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.
Georges Cuvier. Jean Léopold Nicolas Frédéric, baron Cuvier (23 August 1769 – 13 May 1832), known as Georges Cuvier (/ ˈkjuːvieɪ /; [1] French: [ʒɔʁʒ (ə) kyvje]), was a French naturalist and zoologist, sometimes referred to as the "founding father of paleontology". [2] Cuvier was a major figure in natural sciences research in the ...
An American-style crossword grid layout. A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one letter ...
Least concern (LC): 3,306 species. Data deficient (DD): 872 species. Mammalian species (IUCN, 2020-1) 5850 extant species have been evaluated. 4978 of those are fully assessed a. 3651 are not threatened at present b. 1244 to 2116 are threatened c. 81 to 83 are extinct or extinct in the wild: 81 extinct (EX) species d.
William F. Shortz (born August 26, 1952) is an American puzzle creator and editor who is the crossword editor for The New York Times. He graduated from Indiana University with a degree in the invented field of enigmatology. After starting his career at Penny Press and Games magazine, he was hired by The New York Times in 1993.
Species go extinct constantly as environments change, as organisms compete for environmental niches, and as genetic mutation leads to the rise of new species from older ones. At long irregular intervals, Earth's biosphere suffers a catastrophic die-off, a mass extinction , [ 9 ] often comprising an accumulation of smaller extinction events over ...
The largest extinction was the Kellwasser Event (Frasnian - Famennian, or F-F, 372 Ma), an extinction event at the end of the Frasnian, about midway through the Late Devonian. This extinction annihilated coral reefs and numerous tropical benthic (seabed-living) animals such as jawless fish, brachiopods, and trilobites.