quaternary — /kwot euhr ner ee, kweuh terr neuh ree/, adj., n., pl. quaternaries. adj. 1. consisting of four. 2. arranged in fours. 3. (cap.) Geol. noting or pertaining to the present period of earth history, forming the latter part of the Cenozoic Era,… … Universalium
United States physiographic region — There are eight distinct physiographic divisions within the continental United States. Each is composed of smaller physiographic areas called provinces and sections respectively. [cite web | title = Physiographic Regions | publisher = United… … Wikipedia
Black dogfish — Conservation status Least Concern ( … Wikipedia
North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… … Universalium
Silurian Period — Interval of geologic time, 443–417 million years ago. The third period of the Paleozoic Era, the Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes. The continents were… … Universalium
Mississippi River — a major river of North America that flows from the US state of Minnesota to the Gulf of Mexico. It was called the ‘Father of Waters’ by Native Americans. It is 2 348 miles/3 778 kilometres long and passes the cities of Minneapolis, St Louis,… … Universalium
Geography of the Interior United States — the games at the great lake are held in the winter so none can live they realy dont want otters or bubble gum to live either. so just go die Physiographic regions of the U.S. Interior See:legend For purposes of description, the physical geography … Wikipedia
Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… … Universalium
Continental Divide (Atlantic/Pacific) — For continental divides in general, see Continental Divide. [ thumb|300px|Continental divides in North America. The Great Divide is in red.] Continental Divide or Great Divide is the name given to the North American portion of the mountainous… … Wikipedia
Cold seep — Marine habitats Tube worms are among the dominant species in one of four cold seep community types in the Gulf of Mexico. Littoral zone … Wikipedia
