Mojave Desert

The Mojave Desert (pronunciation: /moʊˈhɑːvi, mə-/mo-HAH-vee) is a rain-shadow, mostly high desert area, that occupies a significant portion of southeastern California and smaller parts of central California, southern Nevada, southwestern Utah and northwestern Arizona in the United States. The Mojave Desert's boundaries are generally defined by the presence of Yucca brevifolia (Joshua trees), considered an indicator species for this desert. It is the driest of the North American deserts. The desert is believed to support between 1,750 and 2,000 species of plants.

It is roughly rectangular in shape, bounded by the Great Basin Desert to the north, and the Sonoran Desert to the south and east. The topographical boundaries include the Tehachapi Mountains to the west, and the San Gabriel Mountains and San Bernardino Mountains to the south. The mountain boundaries are quite distinct since they are outlined by the two largest faults in California, the San Andreas and Garlock faults. The Mojave Desert displays typical basin and range topography. Higher elevations above 2,000 feet (610 m) in the Mojave are commonly referred to as the High Desert; however, Death Valley is the lowest elevation in North America at 282 feet (86 m) below sea level and is one of the Mojave Desert's more notorious places. It occupies less than 50,000 square miles, making it the smallest of the North American deserts.

Mojave

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National Geographic

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Desert

A desert is a barren area of land where little precipitation occurs and consequently living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to the processes of denudation. About one third of the land surface of the world is arid or semi-arid. This includes much of the polar regions where little precipitation occurs and which are sometimes called polar deserts or "cold deserts". Deserts can be classified by the amount of precipitation that falls, by the temperature that prevails, by the causes of desertification or by their geographical location.

Deserts are formed by weathering processes as large variations in temperature between day and night put strains on the rocks which consequently break in pieces. Although rain seldom occurs in deserts, there are occasional downpours that can result in flash floods. Rain falling on hot rocks can cause them to shatter and the resulting fragments and rubble strewn over the desert floor is further eroded by the wind. This picks up particles of sand and dust and wafts them aloft in sand or dust storms. Wind-blown sand grains striking any solid object in their path can abrade the surface. Rocks are smoothed down, and the wind sorts sand into uniform deposits. The grains end up as level sheets of sand or are piled high in billowing sand dunes. Other deserts are flat, stony plains where all the fine material has been blown away and the surface consists of a mosaic of smooth stones. These areas are known as desert pavements and little further erosion takes place. Other desert features include rock outcrops, exposed bedrock and clays once deposited by flowing water. Temporary lakes may form and salt pans may be left when waters evaporate. There may be underground sources of water in the form of springs and seepages from aquifers. Where these are found, oases can occur.

Las Vegas

Las Vegas (/lɑːs ˈveɪɡəs/, also locally /lɑːs ˈvɛɡᵻs/; Spanish: [laz ˈβeɣas]) officially the City of Las Vegas and often known as simply Vegas, is a city in the United States, the most populous city in the state of Nevada, the county seat of Clark County, and the city proper of the Las Vegas Valley. Las Vegas is an internationally renowned major resort city known primarily for gambling, shopping, fine dining and nightlife and is the leading financial and cultural center for Southern Nevada.

The city bills itself as The Entertainment Capital of the World, and is famous for its mega casino–hotels and associated entertainment. A growing retirement and family city, Las Vegas is the 29th-most populous city in the United States, with a population of 603,488 at the 2013 United States Census Estimates. The 2013 population of the Las Vegas metropolitan area was 2,027,828. The city is one of the top three leading destinations in the United States for conventions, business, and meetings. In addition, the city's metropolitan area has more AAA Five Diamond hotels than any other city in the world, and is a global leader in the hospitality industry. Today, Las Vegas is one of the top tourist destinations in the world.