151 résultats pour "migrations"
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Europe .
D Vegetation Although much of Europe, particularly the west, was originally covered by forest, the vegetation has been transformed by human habitation and the clearing of land.Only in the most northerly mountains and in parts of north central European Russia has the forest cover been relatively unaffected by human activity. On the otherhand, a considerable amount of Europe is covered by woodland that has been planted or has reoccupied cleared lands. The largest vegetation zone in Europe, cuttin...
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Europe - Geography.
D Vegetation Although much of Europe, particularly the west, was originally covered by forest, the vegetation has been transformed by human habitation and the clearing of land.Only in the most northerly mountains and in parts of north central European Russia has the forest cover been relatively unaffected by human activity. On the otherhand, a considerable amount of Europe is covered by woodland that has been planted or has reoccupied cleared lands. The largest vegetation zone in Europe, cuttin...
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Salmon (fish) - biology.
alarm and become one of the most important conservation issues in the Pacific Northwest. Less than 2 percent of the wild salmon population of the Columbia River Basin(including parts of Washington, Oregon, Idaho, Montana, Wyoming, and British Columbia) remains and only one individual sockeye salmon returned to the Snake Riverin Idaho in 1994. Coho salmon in the Snake River have been declared extinct by the U.S. Fish and Wildlife Service, as have 106 other salmon populations on the WestCoast. Man...
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Middle East - Geography.
though overall they have improved considerably since the 1970s. This variation reflects the different levels of wealth and development in countries of the Middle East. Inthe highly developed country of Israel the infant mortality rate was 8 deaths per 1000 live births in 1997. By comparison, the rate per 1000 live births was 71 in less-developed Egypt and 75 in Yemen. A Ethnic Groups and Languages Arabs make up the majority of the people of the Middle East, accounting for almost the entire popu...
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Bat - biology.
tomb bat has rather small ears. The shapes of bat ears are extremely varied. The wide ears of the Australian false vampire bat meet above the head and are fused.Many bats are able to turn their ears in the direction of faint noises. Bat hearing and its use in echolocation are highly developed. Some bats have large, conspicuous eyes, while others may have small beady eyes. This variation suggests that vision plays different roles in the lives of various species.Despite the familiar expression, 'b...
- CV et Lettre de motivation : demande de renseignements à l'Office des migrations internationales.
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Birding - biology.
swallows, and rock doves nest on buildings in cities, towns, and farms. The chimney swift has abandoned hollow trees for chimneys as a nest site in urban areas.Mallards and Canada geese—once exclusively wild, migratory species—now live year-round in the open spaces found in city parks and golf courses. Nearly all purplemartins, a songbird species that once used the abandoned nests of woodpeckers or the natural cavities of cliffs or dead trees, now live primarily in structures specificallyconstru...
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Population.
year AD 1, and it took more than 1,500 years to reach the 500 million mark. Growth was not steady but was marked by oscillations dictated by climate, food supply, disease, and war. Starting in the 17th century, great advances in scientific knowledge, agriculture, industry, medicine, and social organization made possible rapid acceleration inpopulation growth. Machines gradually replaced human and animal labor. People slowly acquired the knowledge and means to control disease. By 1900 the worldp...
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Afghanistan - country.
D Climate Most of Afghanistan has a subarctic mountain climate with dry and cold winters, except for the lowlands, which have arid and semiarid climates. In the mountains and afew of the valleys bordering Pakistan, a fringe effect of the Indian monsoon, coming usually from the southeast, brings moist maritime tropical air in summer.Afghanistan has clearly defined seasons: Summers are hot and winters can be bitterly cold. Summer temperatures as high as 49°C (120°F) have been recorded in thenorth...
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Taïwan ____________________ une Ile stratégique très convoitée
W DISPUTES TEIIITOIIALES ~ - t;::: - En mer de Chine méridionale , 1'_..,., M s,nlfr , situé sur un axe slratégique. est en partie contrôlé par Taiwan . Il fait l'objet d'un conflit de souveraineté entre Taiwan, la Chine , la Malaisie , Brunei, les Philippines et le VIetnam . Des tensions sur place émaillent régulièrement les relations entre les différents Bats. Les arch ipels des Paracels, des Macdesfield et des Pratas sont aussi revendiqués par Ta...
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histoire relation international
Paragraphe premier : les flux migr atoires De la seconde moitié du 19 ème siècle à la crise de 1930 se font les grandes migrations européennes vers l’ouest des Etats -Unis et l’Australie. La conjoncture est particulière : poussée démographique de l’Europe, besoin de certaines puissances de coloniser des espaces par des hommes. En l’an 2000, la moitié de l’humanité habite des villes. Cette urbanisation est spectaculaire et s’accélère...
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CM Histoire de la France urbaine ou rurale
I- La désagrégation du cadre politique 1) La fin des grandes migrations et le basculement au nord de l’économie a) Le phénomène visible 800 – 888 : période carolingienne. (Couronnement Charlemagne – disparition) Deux phénomènes distincts qui ont une influence cruciale sur les dynamismes de la ville et la campagne : - Les grandes migrations : fin 3 ième siècle au début du 4 ième siècle après J-C avec installation de nouveaux peuples à l’intérieur de l’empire romain Il y avait un pacte (F...
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démographie
1
PRÉSENTATION
démographie, étude de la population humaine, de sa structure et de son évolution, d'un point de vue quantitatif et qualitatif.
8,3 p. 1 000 en Allemagne et 14,1 p. 1000 aux États-Unis) et un indice synthétique de fécondité tournant autour de 2 (1,9 en France en 2006). Le renouvellement des générations (garanti si chaque personne a en moyenne un seul descendant dans la génération suivante) est assuré avec 2,1 enfants par femme(dans les pays industrialisés). 3.3. 2 L’espérance de vie et le taux de mortalité L’espérance de vie à la naissance est la durée de vie moyenne qu’une personne peut espérer atteindre dans un pays d...
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Middle East - geography.
years.Spectrum Colour Library Apart from the Nile River, which provides much of the water supply and irrigation systems of Egypt, and the Tigris and Euphrates rivers, which supply Iraq, Syria, andTurkey, there are no major rivers or navigable waterways. The Sea of Galilee (Lake Tiberias) in northern Israel, fed from the north by the shallow, unnavigable JordanRiver, provides Israel’s main source of fresh water. With such a limited water supply, access to water for drinking, irrigation, and hydro...
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LES MIGRATIONS
La mobilité des hommes est aujourd'hui croissante et est deve troublées. Des populations survivent ainsi dans un profond...
LES MIGRATIONS La mobilité des hommes est aujourd'hui croissante et est deve troublées. Des populations survivent ainsi dans un profond nue un fait universel. Elle ne revêt cependant pas partout les dénuement et en subissant un Important déclassement social. Ces flux sont pour l'essentiel cantonnés dans le Tiers Monde, tra mêmes formes : ■ tous les déplacements n'impliquent pas de changement de rési giquement touché par de nombreux conflits. La proportion des réfugiés accueillis dans les pay...
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Antelope - biology.
antelopes still display complex patterns of behavior, although much of it is instinctive rather than learned. In open habitats, antelopes run a high risk of predation (being preyed upon). To survive they use several kinds of defensive strategy, including living in herds. Herd living ensures that many pairs of eyes and ears are on the alert for danger. Herd living also gives individuals a better chance of avoiding attack, because predators canchoose from many potential targets. When danger thre...
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Evolution - biology.
genetic diversity to extinction. Sexual reproduction ensures that the genes in a population are rearranged in each generation, a process termed recombination. Although the combinations of genes inindividuals change with each new generation, the gene frequency, or ratio of different alleles in the entire population, remains relatively constant if no evolutionaryforces act on the population. One such force is the introduction of new genes into the genetic material of the population, or gene pool...
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Sri Lanka - country.
acacias, and orchids are found in many areas. The animal life of Sri Lanka includes 88 species of mammals, 21 of which are threatened with extinction. The Asian elephant, cheetah, leopard, and several species ofmonkey are endangered and officially protected. The island’s many species of primates include the long-tailed langur, toque macaque, and slender loris. Other mammalsinclude the sloth bear, several species of deer, mongoose, and wild boar. Reptiles are numerous, with 144 known species. Som...
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THEME : MIGRATION DES ADRESSES RESEAUX IPV4 VERS IPV6 à TRAVERS UN RESEAUX VPN/MPLS: CAS DE MATRIX TELECOMS
REPUBLIQUE DE CAMEROUN Paix-travail-patrie REPUBLIC OF CAMEROUN Peace-Work-Fatherland INSTITUT AFRICAIN D’INFORMATIQUE Matrix telecom S.A. Centre d’Excellence Technologique PAUL BIYA Représentation Du Cameroun BP: 13719 Yaoundé Cameroun Tel: 222-729-958/222-729-957 Site web: www.iaicameroun.com e-mail: [email protected] BP: 4124 Yaoundé, Cameroun Tel: +237 222 21 26 11 Site web: www.matrixtelecoms.com E-mail : [email protected] RAPPORT DE FIN DE STAGE...
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Mondialisation et interdépendances
a) Les grandes institutions mondiales et régionales b) Les ONG E) Les centres d'impulsion de l'économie mondiale 1- La triade en voie d'élargissement a) 3 pôles majeurs b) Des périphéries intégrées 2- Une structuration de l'économie mondiale en forme d'archipel a) L'AMM : Archipel mégalopolitain mondial b) La valorisation des interfaces F) Les marges de la mondialisation 1- Une intégration imparfaite a) Des disparités à toutes les échelles b) Le cas des banlieues 2- Des marges délaissées a) Des...
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Goose - biology.
Branta comes from a German word meaning “burned” and all of the geese in this genus have black plumage somewhere on their bodies. The brant, a sea goose that also belongs to this genus, is found on both coasts of North America. Brants are darker than barnacle and Canada geese and similar in size to the smallest Canadageese. Like the Canada and barnacle goose, the brant nests in Arctic regions. But unlike them, it winters chiefly on salt water. Instead of the white cheeks of Canadaand barnacle g...
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Europe, terre d'asile, terre d'exil
entrouverte, prennent leur envol. De 700 000 entrées par an dans les années 1980, l'Europe passe à largement plus d'un millionau cours de la décennie suivante, dont près de la moitié en Allemagne. Sans oublier les clandestins, qui, de plus en plusnombreux, franchissent les frontières au prix de drames répétés (2 000 morts entre 1993 et 2000). Trois phénomènes presque concomitants vont alors imposer la nécessité d'une politique européenne : la République fédéraleabsorbe l'essentiel des migrati...
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Duck - biology.
from water. When ducks feed they push their tongue against the top of their mouth to squeeze water through the lamellae, leaving the food behind. Mergansers arefish-eating ducks with slender bills that are notched on the edges like the blade of a saw. These saw-toothed beaks help the ducks catch and hold their slippery prey. VI COURTSHIP AND REPRODUCTION Ducks form pairs long enough to mate, but most species find new mates each year. In a few species, including buffleheads and whistling ducks,...
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Zebra - biology.
C Life Span Captive zebras have lived into their late 30s. Life expectancy in the wild, where predators abound, is probably not much more than 12 years. IV SOCIAL BEHAVIOR Like horses, zebras have large brains and a wide variety of social behaviors. Although they cannot match the overall intelligence of mammals that hunt, zebras interactwith each other in complex ways. Zebras usually live in groups known as herds, but the social structure of these groups depends on the species. The plains zeb...
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Bird.
I
INTRODUCTION
Bird, animal with feathers and wings. Birds are the only
B Physical Adaptations for Flight The internal body parts of all birds, including flightless ones, reflect the evolution of birds as flying creatures. Birds have lightweight skeletons in which many of themajor bones are hollow. A unique feature of birds is the furculum, or wishbone, which is comparable to the collarbones of humans, although in birds the left and rightportions are fused together. The furculum absorbs the shock of wing motion and acts as a spring to help birds breathe while they...
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Bird - biology.
B Physical Adaptations for Flight The internal body parts of all birds, including flightless ones, reflect the evolution of birds as flying creatures. Birds have lightweight skeletons in which many of themajor bones are hollow. A unique feature of birds is the furculum, or wishbone, which is comparable to the collarbones of humans, although in birds the left and rightportions are fused together. The furculum absorbs the shock of wing motion and acts as a spring to help birds breathe while they...
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Ecuador - country.
F Natural Resources Ecuador’s main mineral wealth is in petroleum. Other mineral resources of the country include gold, silver, copper, lead, and zinc. Forests cover 38.3 percent of thecountry. G Plants and Animals Along the northern part of the Ecuador coast, and within the inner portion of the southern coast, tropical jungles abound. In some places the jungles extend up theslopes of the Andes as wet, mossy forests. Dense forests cover both flanks of the Cordilleras, as well as the Oriente, u...
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Immigration.
1655, only to lose all of their North American colonies to the British in 1664. These early colonies were often quite cosmopolitan, drawing settlers from many nations.When the English seized New Amsterdam, the city was home to perhaps 1500 residents, including Walloons, Huguenots, Swedes, Dutchmen, and African Americans. C The French and Spanish The French and Spanish also established colonies in North America. The Spanish established the oldest permanent European settlement in Saint Augustine,...
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Immigration - U.
1655, only to lose all of their North American colonies to the British in 1664. These early colonies were often quite cosmopolitan, drawing settlers from many nations.When the English seized New Amsterdam, the city was home to perhaps 1500 residents, including Walloons, Huguenots, Swedes, Dutchmen, and African Americans. C The French and Spanish The French and Spanish also established colonies in North America. The Spanish established the oldest permanent European settlement in Saint Augustine,...
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Nebraska - geography.
by natural resource districts to limit the rate of pumping for irrigation. C Climate Nebraska has a typical continental climate with wide seasonal variations in temperature. C1 Temperature Winter temperatures below -20°C (0° F) and summer temperatures in the upper 30°s C (lower 100°s F) are common. The average January temperature varies from about -7° C (about 20° F) in the northeast to about -2° C (about 29° F) in the southwest. The average for July, thehottest month, ranges from about 26° C...
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Nebraska - USA History.
by natural resource districts to limit the rate of pumping for irrigation. C Climate Nebraska has a typical continental climate with wide seasonal variations in temperature. C1 Temperature Winter temperatures below -20°C (0° F) and summer temperatures in the upper 30°s C (lower 100°s F) are common. The average January temperature varies from about -7° C (about 20° F) in the northeast to about -2° C (about 29° F) in the southwest. The average for July, thehottest month, ranges from about 26° C...
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First Americans.
bones and artifacts helped 19th-century archaeologists establish the age of ancient human encampments in Europe. Yet, search as they might, American archaeologists found no comparable evidence of a Pleistocene-era human presence. But several sites revealed stone artifacts thatsome scholars believed looked similar to the ancient stone tools found in Europe. On the basis of this similarity, these experts claimed the American artifacts must be asold. By the 1890s, however, other scholars had challe...
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First Americans - Canadian History.
bones and artifacts helped 19th-century archaeologists establish the age of ancient human encampments in Europe. Yet, search as they might, American archaeologists found no comparable evidence of a Pleistocene-era human presence. But several sites revealed stone artifacts thatsome scholars believed looked similar to the ancient stone tools found in Europe. On the basis of this similarity, these experts claimed the American artifacts must be asold. By the 1890s, however, other scholars had challe...
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Les migrations des travailleurs dans le monde ?
dont l'absence peut être dommageable à l'effort de décollage économique, surtout lorsqu'il s'agit de personnelqualifié.• Les conséquences sont évidemment de nature différente pour les pays d'accueil. Les États-Unis en donnent desexemples typiques (document 3). La formation de ghettos n'en est pas le seul élément ; on constate que certainesgrandes villes sont majoritairement habitées par les immigrés qui, par rapport à la population totale demeurent desminorités. Cela montre les difficult...
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Les mouvements internationaux de migration
migrants. Le degré de flexibilité n'est pas le même selon qu'il s'agit d'un marché destravailleurs qualifiés ou d'un marché des travailleurs non qualifiés o Cas d'un marché du travail où le salaire minimum est supérieur au salaire d'équilibre,tel le marché des travailleurs non qualifiésLa demande de travail des entreprises peut être contraint en présence d'un salaireminimum. Les entreprises vont embaucher moins de travailleurs si le salaire minimum estsupérieur au salaire d'équilibre. Dans ce ca...
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Native Americans of North America.
addition to smallpox and measles, explorers and colonists brought a host of other diseases: bubonic plague, cholera, typhoid fever, scarlet fever, pleurisy, mumps,diphtheria, pneumonia, whooping cough, malaria, yellow fever, and various sexually transmitted infections. Despite the undisputed devastation wreaked on Indian populations after European contact, native populations showed enormous regional variability in their response todisease exposure. Some peoples survived and, in some cases, even...
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Native Americans of North America - Canadian History.
addition to smallpox and measles, explorers and colonists brought a host of other diseases: bubonic plague, cholera, typhoid fever, scarlet fever, pleurisy, mumps,diphtheria, pneumonia, whooping cough, malaria, yellow fever, and various sexually transmitted infections. Despite the undisputed devastation wreaked on Indian populations after European contact, native populations showed enormous regional variability in their response todisease exposure. Some peoples survived and, in some cases, even...
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Animal - biology.
Vertebrates are customarily divided into cold-blooded and warm-blooded animals, but these labels are not very precise. Biologists normally use the terms ectoderm and endoderm to describe temperature regulation more accurately. An ectoderm is an animal whose temperature is dictated by its surroundings, while an endoderm is one that keeps its body at a constant warm temperature by generating internal heat. Reptiles, amphibians, and fish are ectoderms. Although they do not maintain a constant wa...
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Les migrations internationales concernent essentiellement les pays du Sud, mais
la pression s’accentue vers ceux du Nord
Selon les estimations...
Les migrations internationales concernent essentiellement les pays du Sud, mais la pression s’accentue vers ceux du Nord Selon les estimations du Fonds des Nations unies pour la population (FNUAP), le nombre des migrants dans le monde (migrations internes et réfugiés non compris) oscillait entre 130 et 150 millions à la fin du XXe siècle, soit 2,3 % de la population mondiale, l’Union européenne en accueillant environ 18 millions et les États-Unis un peu moins de 25 millions. L’essentiel des migr...
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Les déplacements de population dans les années 1970 (démographie)
développaient les moyens de transport, ont constitué le contexte favorable à la grande émi gration européenne. Mais des causes indivi duelles, poli tiques, économiques, psychologi ques qui se résument en une différence de niveau de vie matériel ou moral entre pays d'immigration et pays de départ, incitèrent les hommes à s'expatrier. • Le mouvement a été br·ef et limité. Commencé à l'aube du xrx • siècle, il sc prec1se vers 1840 e...
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Federal Republic of Germany - country.
B Rivers and Lakes Rivers have played a major role in Germany’s economic development. The Rhine River flows in a northwesterly direction from Switzerland through much of westernGermany and The Netherlands into the North Sea. It is a major European waterway and a pillar of commerce and trade. Its primary German tributaries include theMain, Mosel, Neckar, and Ruhr rivers. The Oder (Odra) River, along the border between Poland and Germany, runs northward and empties into the Baltic; it provides an...
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Mammal - biology.
On land, mammals live in many different habitats, and at a wide range of altitudes. Many mammals dig burrows as refuges or as places to raise their young, but somehave developed a largely subterranean lifestyle, feeding on small animals or plant roots beneath the soil's surface. These animals, including moles and mole-rats, digthrough the ground either with spadelike front paws or with their teeth, and they detect danger by being highly sensitive to vibrations transmitted through the soil.Most m...
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LES REQUINS (Exposé – SVT – Collège/Lycée)
d'individus ; chez certaines grandes espèces, elles peuvent toutefois atteindre la centaine. Vie sodale La plupart des requins sont solitaires et ne rencontrent les feme lles que pour l'accouplement ; quelques espèces parmi les plus petites vivent en groupes plus ou moins lâches de quelques individus. Les squaliformes sont plus volontiers sociables ; on peut trouver des troupes d'aiguillat d 'un millier d'individus . Mais cette vie en groupe n'est es...
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Illinois - geography.
the state before joining the Mississippi River at Grafton. The Illinois has been deepened and straightened and forms part of the Illinois Waterway. The watershed between rivers that flow into the Mississippi river system and rivers that flow into the Great Lakes is low and in many places is not easily discernible. Inwhat is now the Chicago area, explorers had little difficulty portaging, or carrying, their canoes over the low watershed between the Des Plaines River, which flows intothe Illinois,...
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Illinois - USA History.
the state before joining the Mississippi River at Grafton. The Illinois has been deepened and straightened and forms part of the Illinois Waterway. The watershed between rivers that flow into the Mississippi river system and rivers that flow into the Great Lakes is low and in many places is not easily discernible. Inwhat is now the Chicago area, explorers had little difficulty portaging, or carrying, their canoes over the low watershed between the Des Plaines River, which flows intothe Illinois,...
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oiseaux.
Les oiseaux ont une ouïe très développée, malgré l’absence d’oreille externe (pavillon). La structure de l’oreille interne est également différente de celle des mammifères.Elle leur permet de percevoir deux sons séparés par un intervalle de deux millièmes de seconde, ce qui est dix fois mieux que la performance humaine. La gamme des sonsaudibles par les oiseaux est la même que celle de l’homme : les oiseaux ne perçoivent ni les infrasons, ni les ultrasons. 2.6. 3 Odorat et goût L’odorat des ois...
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La place des européens dans le peuplement de la Terre
*-Nouveau rapport à la mort : Châtiment de Dieu d’où les précessions de flagellants. - Une forme de banalisat ion de la mort, retrouvé dans l’art Occidental. 2. L’explosion démographique (XVIII e-XIX e) *A partir du milieu du XVIII e siècle l’Europe connue la transition démographique ( On appelle transition démographique le passage d'un régime démographique traditionnel, dans lequel les taux de natalité et de mortalité sont très élevés (autour de 40 ‰), à un régime démographiqu...
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Effets de la migration internationale sur la croissance économique
REPUBLIQUE DU BENIN FRATERNITE – JUSTICE – TRAVAIL MINISTERE DE L’ENSEIGNEMENT SUPERIEUR ET DE LA RECHERCHE SCIENTIFIQUE UNIVERSITE DE PARAKOU FACULTE DES SCIENCES ECONOMIQUES ET DE GESTION (FASEG) MEMOIRE DE LICENCE PROFESSIONNELLE Thème : EFFETS DE LA MIGRATION INTERNATIONALE SUR LA CROISSANCE ECONOMIQUE AU BENIN Mention : Economie Spécialité : Economie et finance internationales Présenté et soutenu par : AOGA Eni Prisca & ASSOUMA Blanchard Babylas Riyad-Dine Avec l...
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L'inégal dynamisme économique des régions françaises.
alimentée par les importations ; les industries textiles ont perdu beaucoup d'emplois. Ainsi la région a souffert de ladésindustrialisation, a découvert le chômage et les paysages de « friches industrielles ». Pourtant, depuis quinze ans, ces régions ont reçu une aide importante de l'Etat pour surmonter leurs difficultés.Ainsi, dans le Nord, les efforts de reconversion se sont appuyés sur quelques atouts : les fortes densités etl'expérience de la main-d'oeuvre, une situation favorable...
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Erdöl - Technik.
die erste Europas in der Nähe von Celle, wurden 1858 durchgeführt. Berühmt wurde jedoch die Bohrung, die Colonel Edwin L. Drake am 27. August 1859 am Oil Creek inPennsylvania (USA) durchführte. Drake bohrte im Auftrag des amerikanischen Industriellen George H. Bissell nach dem „Muttersee”, aus dem das Öl im WestenPennsylvanias nach den damaligen Vermutungen heraussickerte. In nur 21,2 Meter Tiefe stieß Drake auf die erste größere Ölquelle. Drakes Erfolg war der Beginn einer schnell wachsenden Er...