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Mojave Desert
The Mojave Desert (; ; ) is a desert in the rain shadow of the southern Sierra Nevada mountains and Transverse Ranges in the Southwestern United States. Named for the Indigenous peoples of the Americas, indigenous Mohave people, it is located primarily in southeastern California and southwestern Nevada, with small portions extending into Arizona and Utah. The Mojave Desert, together with the Sonoran Desert, Sonoran, Chihuahuan Desert, Chihuahuan, and Great Basin Desert, Great Basin deserts, form a larger List of North American deserts, North American desert. Of these, the Mojave is the smallest and driest. It displays typical basin and range topography, generally having a pattern of a series of parallel mountain ranges and valleys. It is also the site of Death Valley, which is the lowest elevation in North America. The Mojave Desert is often colloquially called the "high desert", as most of it lies between . It supports a diversity of flora and fauna. The desert supports a numb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nearctic Realm
The Nearctic realm is one of the eight biogeographic realms constituting the Earth's land surface. The Nearctic realm covers most of North America, including Greenland, Central Florida, and the highlands of Mexico. The parts of North America that are not in the Nearctic realm include most of coastal Mexico, southern Mexico, southern Florida, coastal central Florida, Central America, Bermuda and the Caribbean islands. Together with South America, these regions are part of the Neotropical realm. Major ecological regions The World Wildlife Fund (WWF) divides the Nearctic into four bioregions, defined as "geographic clusters of ecoregions that may span several habitat types, but have strong biogeographic affinities, particularly at taxonomic levels higher than the species level (genus, family)." Canadian Shield The Canadian Shield bioregion extends across the northern portion of the continent, from the Aleutian Islands to Newfoundland. It includes the Nearctic's arctic tundra a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indigenous Peoples Of The Americas
In the Americas, Indigenous peoples comprise the two continents' pre-Columbian inhabitants, as well as the ethnic groups that identify with them in the 15th century, as well as the ethnic groups that identify with the pre-Columbian population of the Americas as such. These populations exhibit significant diversity; some Indigenous peoples were historically hunter-gatherers, while others practiced agriculture and aquaculture. Various Indigenous societies developed complex social structures, including pre-contact monumental architecture, organized city, cities, city-states, chiefdoms, state (polity), states, monarchy, kingdoms, republics, confederation, confederacies, and empires. These societies possessed varying levels of knowledge in fields such as Pre-Columbian engineering in the Americas, engineering, Pre-Columbian architecture, architecture, mathematics, astronomy, History of writing, writing, physics, medicine, Pre-Columbian agriculture, agriculture, irrigation, geology, minin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Justicia Californica
''Justicia californica'' is a deciduous species of flowering shrub native to the deserts of southern California, southern Arizona, and northern Mexico. Its common names include beloperone, chuparosa (from the for hummingbird) and hummingbird bush. It can grow to in height and almost as wide. For a short time it bears succulent leaves about in width. It loses its leaves and then produces plentiful tubular flowers about long between February and June. These are usually in shades of bright to deep red, or sometimes yellow, with a two-lobed upper lip and a wide three-lobed lower lip that falls open to reveal the inside of the blossom. It is one of the northernmost distributed species of the mostly tropical genus '' Justicia''. This is a low bush which grows in watered areas of dry, hot sandy regions or rocky terrain of the desert floor, usually below above sea level. Hummingbird Hummingbirds are birds native to the Americas and comprise the Family (biology), biological fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parkinsonia Florida
''Parkinsonia florida'', the blue palo verde ( syn. ''Cercidium floridum''), is a species of palo verde native to the Sonoran Deserts in the Southwestern United States and Northwestern Mexico.Calflora Database: ''Parkinsonia florida'' accessed 4.1.2013 Its name means "green pole or stick" in Spanish, referring to the green trunk and branches, that perform . Description ''Parkinsonia florida'' grows to heights of . It is a rapidly growing large shrub or small , and rarely survives to 100 years. Compare ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olneya
''Olneya tesota'' is a perennial flowering tree of the family Fabaceae, legumes (peas, beans, etc.), which is commonly known as ironwood, desert ironwood, or palo fierro in Spanish. It is the only species in the monotypic genus ''Olneya''. This tree is part of the western Sonoran Desert in Mexico and United States. Description The desert ironwood grows as a bush or tree, reaching heights of about and average trunk diameters of about . Exceptionally, in larger protected washes it can reach greater height and a more massive trunk. In younger trees, the bark is gray, shiny, and smooth; in older trees the bark is broken open. The tree is evergreen, but can lose its leaves if temperatures fall below . In continual drought conditions the leaves will be lost. The leaves are bluish-green and pinnately compound. They are arranged on a petiole, long, with 6–9 leaflets (or variously up to 15, with 7 opposite and one terminal), each measuring . At the base of each pinnate leaf petio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora And Fauna
An organism is any living thing that functions as an individual. Such a definition raises more problems than it solves, not least because the concept of an individual is also difficult. Many criteria, few of them widely accepted, have been proposed to define what an organism is. Among the most common is that an organism has autonomous reproduction, growth, and metabolism. This would exclude viruses, despite the fact that they evolve like organisms. Other problematic cases include colonial organisms; a colony of eusocial insects is organised adaptively, and has germ-soma specialisation, with some insects reproducing, others not, like cells in an animal's body. The body of a siphonophore, a jelly-like marine animal, is composed of organism-like zooids, but the whole structure looks and functions much like an animal such as a jellyfish, the parts collaborating to provide the functions of the colonial organism. The evolutionary biologists David Queller and Joan Strassmann sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yucca Brevifolia
''Yucca brevifolia'' (also known as the Joshua tree, yucca palm, tree yucca, and palm tree yucca) is a plant species belonging to the genus ''Yucca''. It is tree-like in habit, which is reflected in its common names. This monocotyledonous tree is native to the arid Southwestern United States (specifically California, Arizona, Utah, and Nevada), and northwestern Mexico. It is confined mostly to the Mojave Desert between elevation. It thrives in the open grasslands of Queen Valley (Joshua Tree National Park), Queen Valley and Lost Horse Valley in Joshua Tree National Park. Other regions with a large population of the trees can be found northeast of Kingman, Arizona, in Mohave County, Arizona, Mohave County; and along U.S. Route 93, U.S. 93 just south of the community of Meadview, Arizona a route which has been designated the Joshua Tree Parkway of Arizona. The trees are also abundant in Saddleback Butte State Park north of Downtown Los Angeles in Los Angeles County's Antelope Va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joshua Tree NP - Joshua Tree 2
Joshua ( ), also known as Yehoshua ( ''Yəhōšuaʿ'', Tiberian: ''Yŏhōšuaʿ,'' lit. 'Yahweh is salvation'), Jehoshua, or Josue, functioned as Moses' assistant in the books of Exodus and Numbers, and later succeeded Moses as leader of the Israelite tribes in the Book of Joshua of the Hebrew Bible. His name was Hoshea ( ''Hōšēaʿ'', lit. 'Save') the son of Nun, of the tribe of Ephraim, but Moses called him "Yehoshua" (translated as "Joshua" in English),''Bible'' the name by which he is commonly known in English. According to the Bible, he was born in Egypt prior to the Exodus. The Hebrew Bible identifies Joshua as one of the twelve spies of Israel sent by Moses to explore the land of Canaan. In and after the death of Moses, he led the Israelite tribes in the conquest of Canaan, and allocated lands to the tribes. According to biblical chronology, Joshua lived some time in the Bronze Age. According to Joshua died at the age of 110. Joshua holds a position of respect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endonym And Exonym
An endonym (also known as autonym ) is a common, name for a group of people, individual person, geographical place, language, or dialect, meaning that it is used inside a particular group or linguistic community to identify or designate themselves, their place of origin, or their language. An exonym (also known as xenonym ) is an established, ''non-native'' name for a group of people, individual person, geographical place, language, or dialect, meaning that it is used primarily outside the particular place inhabited by the group or linguistic community. Exonyms exist not only for historico-geographical reasons but also in consideration of difficulties when pronouncing foreign words, or from non-systematic attempts at transcribing into a different writing system. For instance, is the endonym for the country that is also known by the exonyms ''Germany'' and in English and Italian, respectively, and in Spanish and French, respectively, in Polish, and and in Finni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tungsten
Tungsten (also called wolfram) is a chemical element; it has symbol W and atomic number 74. It is a metal found naturally on Earth almost exclusively in compounds with other elements. It was identified as a distinct element in 1781 and first isolated as a metal in 1783. Its important ores include scheelite and wolframite, the latter lending the element its alternative name. The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all known elements, melting at . It also has the highest boiling point, at . Its density is 19.254 g/cm3, comparable with that of uranium and gold, and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work into metal. However, pure single-crystalline tungsten is more ductile and can be cut with a hard-steel hacksaw. Tungsten occurs in many alloys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Death Valley
Death Valley is a desert valley in Eastern California, in the northern Mojave Desert, bordering the Great Basin Desert. It is thought to be the Highest temperature recorded on Earth, hottest place on Earth during summer. Death Valley's Badwater Basin is the point of lowest elevation in North America, at below sea level. It is east-southeast of Mount Whitney – the highest point in the contiguous United States, with an elevation of 14,505 feet (4,421 m). On the afternoon of July10, 1913, the National Weather Service, United States Weather Bureau recorded a high temperature of 134 °F (56.7 °C) at Furnace Creek, California, Furnace Creek in Death Valley, which stands as the Highest temperature recorded on Earth, highest ambient air temperature ever recorded on the surface of the Earth. This reading, however, and several others taken in that period are disputed by some modern experts. Lying mostly in Inyo County, California, near the border of California and Nevada, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Basin And Range Topography
Basin and range topography is characterized by alternating parallel mountain ranges and valleys. It is a result of crustal extension due to mantle upwelling, gravitational collapse, crustal thickening, or relaxation of confining stresses. The extension results in the thinning and deformation of the upper crust, causing it to fracture and create a series of long parallel normal faults. This results in block faulting, where the blocks of rock between the normal faults either subside, uplift, or tilt. The movement of these blocks results in the alternating valleys and mountains. As the crust thins, it also allows heat from the mantle to more easily melt rock and form magma, resulting in increased volcanic activity. Types of faulting Symmetrical faulting: horst and graben With crustal extension, a series of normal faults which occur in groups, form in close proximity and dipping in opposite directions. As the crust extends it fractures in series of fault planes, some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
