Tartu 2007 Deserts In geography, a desert is a landscape form or region that receives very little precipitation. Generally, deserts are defined as areas that receive an average annual precipitation of less than 250 mm (10 inches). Deserts cover at least one-fourth of the Earth's land surface. Desert biomes can be classified according to several characteristics. There are four major types of deserts: · Hot and dry · Semiarid · Coastal · Cold Location The four major North American deserts of hot and dry deserts are the Chihuahuan, Sonoran, Mojave and Great Basin. Others outside the U.S. include the Southern Asian realm, Neotropical (South and Central America), Ethiopian (Africa) and Australian. The major deserts of semiarid deserts include the sagebrush of Utah, Montana and Great Basin. They also include the Nearctic realm (North America, Newfoundland,
On 1 January 1901, the six colonies federated,forming a Commonwealth of Australia, since Federation, Australia has maintaned a stable liberal democratic political system. The population of 22,7 million is highly urbanised and heavily concentrated in eastern states due to geography and climate. A highly developed country, Australia is the world's 12th largest economy and has the world's fifthhighest per capita income. Enviroment. Although most of Australia is semiarid or desert, it includes a diverse range of habitats from alpine heaths to tropical rainforests. Australian forests are mostly made up of evergreen species, particularly eucalyptus trees in the less arid regions, wattles replace them in drier regions and deserts as the most dominant species. Among wellknown Australian fauna are the monotremes (the platypus and echidna); a host of marsupials, including the kangaroo, koala, and wombat, and birds such as the emu and the kookaburra.
In America, there are very many parks, which 58 are national parks and there are hundreds of federally managed parks, forests and wilderness areas. The first national park in the world was Yellowstone national park in Wyoming. http://www.youtube.com/watch?v=3iaSlZE-Wxs&feature=related Many species became extinct soon after the first settlements. The U.S. climate is temperate in most areas, tropical in Hawaii and southern Florida, polar in Alaska, semiarid in the Great Plains, Mediterranean in coastal California and arid in the Great Basin. The droughts and floods are infrequent in America. In north Alaska was recorded the lowest temperature in U.S. -62.2 °C . The highest temperature was recorded in California in Death Valley when the temperature reached 57 °C. The flora is so diverse in America because of the different climates and good weather in some places (like California). National bird is bald eagle National flower is Rose
3. Using the climate diagram describe the climate of the region. Temperate deciduous forest -Well-defined seasons with a distinct winter characterize this forest biome. Moderate climate and a growing season of 140-200 days during 4-6 frost-free months distinguish temperate forests. Temperature varies from -15° C to 25° C. Precipitation (750-1500 mm) is distributed evenly throughout the year. Temperate grassland- Semiarid, continental climates of the middle latitudes typically have between 25 cm and 50 cm of precipitation a year. Much of this falls as snow, serving as reservoir of moisture for the beginning of the growing season. Warm to hot summers are experienced, depending on latitude. In the winter, grassland temperatures can be as low as -40° C, and in the summer it can be as high 20° C. There are two real seasons: a growing season and a dormant season. The growing season is when there
9. Describe the soil of temperate grassland. (vt. õpik lk 61) The soil of the temperate grasslands is deep and dark. The upper layers are the most fertile because of the buildup of many layers of dead branching stems and roots. This organic mater on the surface and in the dead roots provide a great degree of nourishment for the living plants. 10. Why are temperate grassland soils very fertile? (vt. õpik lk 61) Calfication is the dominat soil-forminf process in semiarid regions. When this process works on loess that itself is rich in calcium, the world’s most fertile soils are created, the chernozems. 11. How are animals adapted to life in temperate grassland? The animals that live in grasslands have adapted to dry, windy conditions. There are grazing animals (that eat the grass), burrowing animals, and their predators; insects are abundant. A moderate of level species diversity exists on a grassland. 12. Name some temperate grassland animals.
the volcanoes of a rugged and glaciated Cascade Mountain Range, dense evergreen forests, and high desert across much of the eastern portion of the state. · The towering Douglas firs and redwoods along the rainy Western Oregon coast provide a dramatic contrast with the lower density and fire prone pine tree and juniper forests covering portions of the Eastern half of the state. The eastern portion of the state also includes semiarid scrublands, prairies, deserts, and meadows. These drier areas stretch east from Central Oregon. Mount Hood is the highest point in the state at 11,239 feet (3,425 m) above sea-level. Crater Lake National Park is the only National Park in Oregon. Arizona · The State of Arizona is a state located in the southwestern region of the United States. The capital and largest city is Phoenix. The second largest city is Tucson.
parks and there are hundreds of federally managed parks, forests and wilderness areas. The first national park in the world was Yellowstone national park in Wyoming. The flora is so diverse in America because of the different climates and good weather in some places (like California). Many species became extinct soon after the first settlements. The U.S. climate is temperate in most areas, tropical in Hawaii and southern Florida, polar in Alaska, semiarid in the Great Plains, Mediterranean in coastal California and arid in the Great Basin. The droughts and floods are infrequent in America. In north Alaska was recorded the lowest temperature in U.S. -62.2 °C . The highest temperature was recorded in California in Death Valley when the temperature reached 57 °C. The hurricanes occur almost every year along the Atlantic seaboard and the Gulf of Mexico. Hurricanes can also strike Hawaii in the Pacific Ocean. In central portions of the U.S
long history. These groups include the Egyptians, Babylonians, Persians, Greeks, Romans, Arabs, European Crusaders, Mongols from Central Asia, Turks, British, and French. In 1946, the French gave up control over Syria, and the Syrian Arab Republic was created. Syria is a country in the Middle East bordering the Mediterranean Sea. Neighboring countries include Iraq, Israel, Jordan, Lebanon, and Turkey. The geography of Syria is primarily semiarid and desert plateau with a double mountain belt in the west. The government system is a republic under authoritarian regime. The chief of state is the President and the head of government is the Prime Minister. Syria has a mixed economy in which there is limited private freedom but the economy remains highly controlled by the government. Syria is a member of the Council of Arab Economic Unity (CAEU). Two-thirds of Syria is desert; the other third is part of the Fertile
in Australia. Two types of crocodiles, the saltwater crocodile and the freshwater crocodile can be found in the north. The dingo or the native dog is not really an Australian native. It has brought from Asia around 3500 years ago. The dingo is an efficient sheep hunter. To protect sheep the dog fence was built in 1964. Climate Australia is the driest continent in the world except Antarctica. It has very low average rainfalls. About 70 per cent of the country is arid or semiarid and cannot support agriculture. The north part of the countrygets about 300 mm rain a year. Much of the rain soakes into the ground and does not form any rivers or lakes. Monsoon winds bring most air during summer. This is the time of high rainfall. It's known as the wet season. High temperature also means that a lot of moisture evaporates or is used by plants. In the southern two thirds of the country the climate is temperate to cool. Winter temperatures can be lower but not freezing
94 and 65 million years ago would have occurred about Decembe r 25th and 27th respectively. ) Recorded history started about 5.500 years ago: on this calendar . that would have bee n about 21 seconds be for e the New Year . · Climate · Tropical wet D Tropical wet and dry _ Arid D Semiarid D Med iterranea n D Hum id subt rop ical · M arine Humid cont inental D Subarctic D Tundra D ·, Ice cap Hig hland High est average annual precipitat ion Lowes! average 6 annual precip tat ion i Highest recorded tempe rature ~ Lowest recorded temperature Major Ocean Currents ........ Cool ~ currents Warm currents 20'W
miles long, and attains a depth of more than a mile. Nearly two billion years of Earth's history has been exposed as the Colorado River and its tributaries cut through layer after of sediment as the Colorado Plateaus have uplifted. 5. Climate Due to its large size and wide range of geographic features, the United States contains examples of nearly every global climate. The climate is temperate in most areas, tropical in Hawaii and southern Florida, polar in Alaska, semiarid in the Great Plains west of the 100 th meridian, Mediterranean in coastal California and arid in the Great Basins. Its comparatively generous climate contributed (in part) to the country's rise as a world power, with infrequent severe drought in the major agricultural regions, a general lack of widespread flooding, and a mainly temperate climate that receives adequate precipitation. 6. Animals, plants, agriculture Animals The moose ranges throughout the northern US
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