598 résultats pour "tree"

• Republic of Indonesia - country.

  Mahakam in East Kalimantan and the Martapura and Barito in South Kalimantan. Most of these rivers originate in the island’s central massif (mountain mass) and meander through extensive swamps as they approach the coast. Settlements such as Samarinda and Banjarmasin cluster along the rivers, which serve ascommunication routes into the interior. The largest rivers on Sumatra drain from west to east into the Strait of Malacca. In the north, the Asahan River once linked trade between the Batak peo...

• Global Warming.

  some of the warming influence of increasing greenhouse gases. A1 Carbon Dioxide Carbon dioxide is the second most abundant greenhouse gas, after water vapor. Carbon dioxide constantly circulates in the environment through a variety of naturalprocesses known as the carbon cycle. It is released into the atmosphere from natural processes such as eruptions of volcanoes; the respiration of animals, whichbreathe in oxygen and exhale carbon dioxide; and the burning or decay of plants and other organic...

• Elephant - biology.

  B Trunk An elephant's nose and upper lip are combined in a long, limber trunk, an exceptionally supple appendage with an estimated 150,000 muscles. The versatile trunk actslike a hand for grasping low-growing shrubs and other food and placing it into the mouth; an arm for breaking off tree branches; or a snorkel for breathing when theelephant's body is submerged. Elephants also use their trunks to suck up water and squirt it into their mouths for drinking or over their bodies for bathing. Nostr...

• Delaware - geography.

  D Climate Delaware has generally hot and humid summers and mild winters. D1 Temperature In July, average daytime temperatures are usually in the upper 20°s to lower 30°sC (80°sF) or even higher. But because summer nights tend to be cooler than thedays, July averages are about 24°C (about 75°F). In addition, onshore sea breezes can reduce daytime temperatures along the coast by 3 to 6 Celsius degrees (5 to 10Fahrenheit degrees). January averages range from -1°C (31°F) at Newark, in the north, t...

• Delaware - USA History.

  D Climate Delaware has generally hot and humid summers and mild winters. D1 Temperature In July, average daytime temperatures are usually in the upper 20°s to lower 30°sC (80°sF) or even higher. But because summer nights tend to be cooler than thedays, July averages are about 24°C (about 75°F). In addition, onshore sea breezes can reduce daytime temperatures along the coast by 3 to 6 Celsius degrees (5 to 10Fahrenheit degrees). January averages range from -1°C (31°F) at Newark, in the north, t...

• Iowa - geography.

  Okoboji, Lost Island, Silver, and West Swan lakes. In addition, reservoirs have been created by damming several smaller Iowa rivers. There are a number of largereservoirs behind dams on the Mississippi River along the Iowa state line. C Climate Iowa’s climate is characterized by warm, generally moist summers and cold winters. Temperatures vary considerably from season to season and, at times, from day today. However, monthly averages are relatively uniform throughout the state and usually vary...

• Iowa - USA History.

  Okoboji, Lost Island, Silver, and West Swan lakes. In addition, reservoirs have been created by damming several smaller Iowa rivers. There are a number of largereservoirs behind dams on the Mississippi River along the Iowa state line. C Climate Iowa’s climate is characterized by warm, generally moist summers and cold winters. Temperatures vary considerably from season to season and, at times, from day today. However, monthly averages are relatively uniform throughout the state and usually vary...

• Ohio - geography.

  conflict with modified Gulf air and causing frontal or cyclonic storms. Gulf air is dominant in summer. In fall, polar air passing over Lake Erie is modified, delaying thekilling frost along the adjacent shoreline. C1 Temperatures The mean annual temperatures for the state range from 9° C (48° F) in the northeast to 13° C (55° F) in the south. Average January temperatures range from -4° C(24° F) in the west to 2° C (35° F) in the south. July averages are 24° C (76° F) in the south and 23° C (73...

• Ohio - USA History.

  conflict with modified Gulf air and causing frontal or cyclonic storms. Gulf air is dominant in summer. In fall, polar air passing over Lake Erie is modified, delaying thekilling frost along the adjacent shoreline. C1 Temperatures The mean annual temperatures for the state range from 9° C (48° F) in the northeast to 13° C (55° F) in the south. Average January temperatures range from -4° C(24° F) in the west to 2° C (35° F) in the south. July averages are 24° C (76° F) in the south and 23° C (73...

• Texas - geography.

  D Climate Eastern Texas has a humid subtropical climate, while a semiarid low latitude climate prevails in central areas, and an arid low latitude climate in the extreme west. Alongthe coast the climate is much milder, with fewer extremes in temperatures. Hurricanes sometimes hit the coastal areas of Texas from late July through September, andtornadoes are common in north-central Texas in April and May. D1 Temperature Summers are hot throughout the state, and temperatures exceeding 35°C (95°F)...

• Texas - USA History.

  D Climate Eastern Texas has a humid subtropical climate, while a semiarid low latitude climate prevails in central areas, and an arid low latitude climate in the extreme west. Alongthe coast the climate is much milder, with fewer extremes in temperatures. Hurricanes sometimes hit the coastal areas of Texas from late July through September, andtornadoes are common in north-central Texas in April and May. D1 Temperature Summers are hot throughout the state, and temperatures exceeding 35°C (95°F)...

• L'auberge de l'ange gardien maison et nous sommes tout seuls.

  L'HOMME.—Est-ce que tu te sens malade? JACQUES.—Non, mais j'ai trop faim, je n'ai pas mange hier; je n'avais plus qu'un morceau de pain pour Paul. L'homme sentit aussi ses yeux se mouiller; il tira de son bissac un bon morceau de pain, du fromage et une gourde de cidre, et presenta a Jacques le pain et le fromage pendant qu'il debouchait la gourde. Les yeux de Jacques brillerent: il allait porter le pain a sa bouche quand un regard jete sur son frere l'arreta: “Et Paul? dit-il, il n'a rien pour...

• Le Ventre de Paris trouvait seul avec Logre et monsieur Lebigre, il se soulagea.

  —N'importe, disait-il en tapant sur les bras de Clemence, vous etes un homme, vous! Clemence avait trouve une nouvelle facon de faire le grog. Elle emplissait d'abord le verre d'eau chaude; puis, apres avoir sucre, elle versait, sur la tranche de citron qui nageait, le rhum goutte a goutte, de facon a ne pas le melanger avec l'eau; et elle l'allumait, le regardait bruler, tres-serieuse, fumant lentement, le visage verdi par la haute flamme de l'alcool. Mais c'etait la une consommation chere qu'e...

• Human Evolution - biology.

  classified as Plesiadapiformes—evolved at least 65 million years ago. The earliest primates evolved by about 55 million years ago, and fossil species similar to lemursevolved during the Eocene Epoch (about 55 million to 38 million years ago). Strepsirhines share all of the basic characteristics of primates, although their brains are notparticularly large or complex and they have a more elaborate and sensitive olfactory system (sense of smell) than do other primates. B Haplorhines B1 Tarsiers T...

• Rhode Island - geography.

  C (73° F). Along the northern state line, the January mean temperature is about 1° C (about 2° F) colder than in Warwick in January. Along the ocean coast, theJanuary mean temperature is -1° C (30° F). Warm season temperatures are also influenced by the ocean and bay, so temperatures are usually cooler along the coastthan in the interior. The difference tends to be greatest in spring and early summer. Winter temperatures in Rhode Island are usually above -7° C (20° F), buttemperatures colder by...

• Rhode Island - USA History.

  C (73° F). Along the northern state line, the January mean temperature is about 1° C (about 2° F) colder than in Warwick in January. Along the ocean coast, theJanuary mean temperature is -1° C (30° F). Warm season temperatures are also influenced by the ocean and bay, so temperatures are usually cooler along the coastthan in the interior. The difference tends to be greatest in spring and early summer. Winter temperatures in Rhode Island are usually above -7° C (20° F), buttemperatures colder by...

• Puerto Rico - geography.

  the length of the day remains fairly constant throughout the year. San Juan has a mean July temperature of 28°C (83°F) and a mean January temperature of 25°C (77°F). The average temperature of the seawater surrounding theisland is 27°C (81°F), with little variation during the course of the year. The entire island is cooled by the trade winds from the northeast. This air also contains much water vapor. As the air is forced to rise over the mountains, it becomescooler and the water vapor condenses...

• Arizona - geography.

  of the Mogollon Rim, the Little Colorado draws very little water from a relatively large watershed, usually containing a mere trickle of water in its riverbed. The ColoradoRiver’s principal tributary is the Gila River, which flows all the way across the southern part of the state from New Mexico to the California border. From the mountainsand plateaus of central Arizona, the Gila River receives the Salt, Agua Fria, and Hassayampa rivers. The Salt River is itself fed by the Verde River. The Gila...

• Arizona - USA History.

  of the Mogollon Rim, the Little Colorado draws very little water from a relatively large watershed, usually containing a mere trickle of water in its riverbed. The ColoradoRiver’s principal tributary is the Gila River, which flows all the way across the southern part of the state from New Mexico to the California border. From the mountainsand plateaus of central Arizona, the Gila River receives the Salt, Agua Fria, and Hassayampa rivers. The Salt River is itself fed by the Verde River. The Gila...

• South Carolina - geography.

  (20° F) or lower, occur each winter. July temperatures average 27° C (80° F) in most of the state, with temperatures in the lower 20°s C (lower 70°s F) in themountains. Except in the mountains, summer daytime highs throughout South Carolina often enter the lower 30°s C (lower 90°s F). The temperature in July in Columbiaranges from 21° to 33° C (70° to 92° F). D2 Precipitation Central South Carolina has an average annual precipitation (both rainfall and snowfall) of 1,140 mm (45 in). Greater amo...

• South Carolina - USA History.

  (20° F) or lower, occur each winter. July temperatures average 27° C (80° F) in most of the state, with temperatures in the lower 20°s C (lower 70°s F) in themountains. Except in the mountains, summer daytime highs throughout South Carolina often enter the lower 30°s C (lower 90°s F). The temperature in July in Columbiaranges from 21° to 33° C (70° to 92° F). D2 Precipitation Central South Carolina has an average annual precipitation (both rainfall and snowfall) of 1,140 mm (45 in). Greater amo...

• La Terre maintenait son gain d'un air de tranquille obstination.

  VII On etait de nouveau a l'epoque de la fenaison, par un ciel bleu et tres chaud, que des brises rafraichissaient; et l'on avait fixe le mariage au jour de la Saint-Jean, qui tombait cette annee-la un samedi. Les Fouan avaient bien recommande a Buteau de commencer les invitations par la Grande, l'ainee de la famille. Elle exigeait des egards, en reine riche et redoutee. Aussi Buteau, un soir, s'en alla-t-il avec Lise, tous les deux endimanches, la prier d'assister a la noce, a la ceremonie, pui...

• Encéfalo - ciencias de la naturaleza.

  que conectan estos dos hemisferios y transfieren información de uno a otro. La corteza cerebral presenta una capa superficial denominada sustancia gris, de unos 2 o 3 mm de espesor, formada por capas de células amielínicas (sin vaina de mielinaque las recubra) que envuelven una sustancia interior de fibras mielínicas (con vaina blanca) denominada sustancia blanca. Las fibras mielínicas unen la corteza cerebralcon otras partes del cerebro: la parte anterior del cerebro con la posterior, las difer...

• Biodiversity.

  a common molecule, ribonucleic acid (RNA), and most also have deoxyribonucleic acid (DNA). These molecules direct the production of proteins—molecules responsiblefor the structure and function of virtually all living cells. This is the evolutionary chain of life. All species are descended from a single common ancestor. From that ancient single-celled microbe, all inherited RNA. As time goesby, species diverge and develop their own peculiar attributes, thus making their own contribution to biodiv...

• Biodiversity - biology.

  a common molecule, ribonucleic acid (RNA), and most also have deoxyribonucleic acid (DNA). These molecules direct the production of proteins—molecules responsiblefor the structure and function of virtually all living cells. This is the evolutionary chain of life. All species are descended from a single common ancestor. From that ancient single-celled microbe, all inherited RNA. As time goesby, species diverge and develop their own peculiar attributes, thus making their own contribution to biodiv...

• 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...

• Bear - biology.

  programs sponsored by zoos or other breeding centers have attempted to breed giant pandas in captivity, although most of these programs have proved unsuccessful.Among the difficulties faced by captive breeders has been the problem of encouraging a female giant panda to mate with a selected male during the two to three daysof the year when she is most fertile, a period known as estrus. B Spectacled Bear Creamy-white rings surrounding the eyes give the spectacled bear its name. Its shaggy coat of...

• Bosnia-Herzegovina - geografía.

  judiciales más importantes de la república. En marzo de 1992, los nacionalistas del Partido Democrático Serbio se retiraron formalmente del gobierno como medida de protesta ante la declaración de independencia. Elgobierno siguió estando respaldado por musulmanes, croatas y serbios moderados. El conflicto se agravó al mes siguiente, cuando los nacionalistas serbios crearon supropia entidad estatal, conocida como República Serbia de Bosnia, bajo el liderazgo de Radovan Karadzic. Los serbobosnios r...

• Manitoba - Geography.

  E Plant Life Forests cover 66 percent of Manitoba. The main forest area is divided into the boreal forest and the mixed-wood forest. The boreal, or northern, forest containsconiferous (cone-bearing) trees, especially white and black spruce, balsam fir, and jack pine. South of the boreal forest is the mixed-wood forest, which contains conifers as well as such deciduous trees as white birch, aspen, poplar, and Manitoba maple. Prairie land is found in the southwest, where the natural vegetation i...

• Manitoba - Canadian History.

  E Plant Life Forests cover 66 percent of Manitoba. The main forest area is divided into the boreal forest and the mixed-wood forest. The boreal, or northern, forest containsconiferous (cone-bearing) trees, especially white and black spruce, balsam fir, and jack pine. South of the boreal forest is the mixed-wood forest, which contains conifers as well as such deciduous trees as white birch, aspen, poplar, and Manitoba maple. Prairie land is found in the southwest, where the natural vegetation i...

• Tennessee (state) - geography.

  The climate of Tennessee is characterized by hot summers, mild winters, and abundant rainfall. C1 Temperature Average July temperatures range from less than 21° C (70° F) in the Blue Ridge region to 27° C (80° F) at Nashville and Memphis. Maximum daytime temperatures insummer often rise above 35° C (95° F) in central and western Tennessee. Daytime temperatures in the mountains rarely rise above 32° C (90° F). Summer nights tendto be warm and muggy in central and western Tennessee, but temperatu...

• Tennessee (state) - USA History.

  The climate of Tennessee is characterized by hot summers, mild winters, and abundant rainfall. C1 Temperature Average July temperatures range from less than 21° C (70° F) in the Blue Ridge region to 27° C (80° F) at Nashville and Memphis. Maximum daytime temperatures insummer often rise above 35° C (95° F) in central and western Tennessee. Daytime temperatures in the mountains rarely rise above 32° C (90° F). Summer nights tendto be warm and muggy in central and western Tennessee, but temperatu...

• New Jersey - geography.

  C Soils Broadly defined, all of New Jersey’s soils are podzolic soils; that is, they are acidic and contain fairly high amounts of iron oxides. The soils in northern New Jersey areirregular in quality and contain rock fragments and small stones deposited by the continental glaciers of the last Ice Age. The soils of the inner coastal plain, unaffectedby glaciation, are the richest in the state, while those of the outer coastal plain are generally infertile. The newer soil classification system d...

• New Jersey - USA History.

  C Soils Broadly defined, all of New Jersey’s soils are podzolic soils; that is, they are acidic and contain fairly high amounts of iron oxides. The soils in northern New Jersey areirregular in quality and contain rock fragments and small stones deposited by the continental glaciers of the last Ice Age. The soils of the inner coastal plain, unaffectedby glaciation, are the richest in the state, while those of the outer coastal plain are generally infertile. The newer soil classification system d...

• Le General Dourakine Le general, se retournant vers ses domestiques, donna des ordres pour qu'on allat plus vite avec une charrette a la recherche de ce pauvre garcon.

  commenca sa toilette. On ne lui avait pas interdit de faire enrager ses femmes de chambre: les deux qui etaient presentes ne recurent que sottises et menaces en recompense de leurs efforts pour bien faire; mais, a leur grande surprise et satisfaction, elles ne recurent ni soufflets ni egratignures. V. PREMIER DEMELE Les petits Papofski regardaient avec surprise Jacques et Paul: ni l'un ni l'autre ne leur baisaient les mains, ne leur faisaient de saluts jusqu'a terre; ils se tenaient droits et de...

• L'influence grandissante du Parlement Européen

  d'intégration du citoyen à l'UE? Nous verrons donc que de nombreux moyens ont été mis en oeuvre par l'Union Européenne pour renforcer l'influence et les pouvoirs du parlement européen afin de créer un cadre favorable à l'intégration du citoyen à l'UE telle qu'elle est prévue par le traité de Maastricht. Pour cela, le parlement a connu un renforcement de ses prérogatives à travers différents volets, de&#769...

• Pot-bouille Bresil, des diners a trois cents francs par tete, dans lesquels il soutenait noblement l'honneur de la commission francaise.

  Tous quatre, ils se regarderent en ricanant. Ils avaient la peau tendue, la digestion lente et egoiste de quatre bourgeois qui venaient de s'emplir, a l'ecart des ennuis de la famille. Ca coutait tres cher, personne n'en avait mange avec eux, aucune fille n'etait la pour abuser de leur attendrissement; et ils se deboutonnaient, ils mettaient leurs ventres sur la table. Les yeux a demi clos, ils eviterent meme d'abord de parler, absorbe chacun dans son plaisir solitaire. Puis, libres, tout en se...

• La Terre terre; ca le tenait si fort, qu'il avait signe un papier avec le pere Saucisse, par lequel celui-ci, apres sa mort, lui cedait un arpent de terre, a la condition qu'il toucherai quinze sous chaque matin, sa vie durant.

  Comme il partait, il les invita a venir faire, le lendemain, la vendange dans sa vigne. On se gaverait de raisin, tant que la peau du ventre en tiendrait. Enfin, il fut si gentil, que les deux autres le trouverent une fameuse canaille tout de meme, mais rigolo, a la condition de ne pas se laisser fiche dedans par lui. Ils l'accompagnerent un bout de chemin, pour le plaisir. Justement, au bas de la cote, ils firent la rencontre de M. et de Mme Charles, qui rentraient, avec Elodie, a leur propriet...

• Le Ventre de Paris --Garde un instant la boutique, n'est-ce pas?

  Le raucourt sert a rendre a la maniotte une belle couleur jaune. Les marchandes croient garder religieusement le secret de cette teinture, qui provient simplement de la graine du rocouyer; il est vrai qu'elles en fabriquent avec des carottes et des fleurs de soucis. —A la fin, venez-vous! dit la jeune femme qui s'impatientait et qui n'etait plus habituee a l'odeur infecte de la cave. Mademoiselle Saget est peut-etre deja partie... Elle doit savoir des choses tres-graves sur mon oncle Gavard. Mad...

• Arte gótico.

  Catedral de SalisburyLa catedral de Salisbury es uno de los mejores ejemplos del gótico inglés. Se construyó entre 1220 y 1260, aunque la aguja sobre elcrucero y los arbotantes se añadieron en el siglo XIV.John Bethell/Bridgeman Art Library, London/New York Con la bóveda gótica los edificios pudieron adoptar formas variadas. Sin embargo, la planta común de las catedrales góticas consistió en tres o cinco naves longitudinales,un transepto, un coro y un presbiterio, es decir, una composición simil...

• Arte gótico - historia.

  Catedral de SalisburyLa catedral de Salisbury es uno de los mejores ejemplos del gótico inglés. Se construyó entre 1220 y 1260, aunque la aguja sobre elcrucero y los arbotantes se añadieron en el siglo XIV.John Bethell/Bridgeman Art Library, London/New York Con la bóveda gótica los edificios pudieron adoptar formas variadas. Sin embargo, la planta común de las catedrales góticas consistió en tres o cinco naves longitudinales,un transepto, un coro y un presbiterio, es decir, una composición simil...

• Fotosíntesis - ciencias de la naturaleza.

  Cloroplastos de raíz de cebollaLos cloroplastos son diminutas estructuras esféricas verdes esenciales para la fotosíntesis. La molécula de clorofila, un compuestoorgánico muy complejo de magnesio, carbono e hidrógeno, regula la absorción de las porciones roja, violeta y azul del espectrovisible.Richard Kirde/Oxford Scientific Films La primera etapa de la fotosíntesis es la absorción de luz por los pigmentos. La clorofila es el más importante de éstos, y es esencial para el proceso. Captura la lu...

• Reproducción vegetal - ciencias de la naturaleza.

  Ciclo biológico de una gimnosperma (conífera)© Microsoft Corporation. Reservados todos los derechos. Los sacos polínicos contienen las células madres del polen (diploides), que por meiosis forman los granos de polen (haploides). El óvulo está cubierto por tegumentos ycontiene la célula madre del saco embrionario, que sufre una meiosis y forma cuatro células, de las que sólo subsiste una, la cual da lugar al saco embrionario, que es unacélula con ocho núcleos. Tres de estos núcleos se sitúan en u...

• Alemania - geografía.

  vecinos. Un acuerdo internacional ejemplar obliga a Alemania a ayudar en la protección medioambiental del Waddenzee o mar de Wadden, el brazo oriental del mar delNorte que comparte con Países Bajos y Dinamarca. Alemania firmó el Convenio sobre el Patrimonio de la Humanidad en 1976 y cuenta con nueve reservas de la biosferareconocidas por el programa El Hombre y la Biosfera de la Organización de las Naciones Unidas para la Educación, la Ciencia y la Cultura (UNESCO). Además, existen unaserie de l...

• New Brunswick - Geography.

  Grand Lake, the largest lake in New Brunswick, is in the lowlands, east of Fredericton. Most other lakes are located in the northern and southwestern parts of NewBrunswick. D Climate New Brunswick has a continental climate that is moderated by maritime influences in the coastal areas. As a result, coastal regions are slightly warmer in the winter andslightly cooler in the summer than are interior regions. Annual temperature variations are large, with the January mean usually at least 25 to 28°C...

• New Brunswick - Canadian History.

  Grand Lake, the largest lake in New Brunswick, is in the lowlands, east of Fredericton. Most other lakes are located in the northern and southwestern parts of NewBrunswick. D Climate New Brunswick has a continental climate that is moderated by maritime influences in the coastal areas. As a result, coastal regions are slightly warmer in the winter andslightly cooler in the summer than are interior regions. Annual temperature variations are large, with the January mean usually at least 25 to 28°C...

• North America - Geography.

  D Climate Although North America has considerable climatic variety, five principal climatic regions can be identified. The northern two-thirds of Canada and Alaska, as well as all ofGreenland, have subarctic and arctic climates, in which long, dark, bitterly cold winters alternate with brief, mild summers. Most of the region, which receives relativelylittle precipitation, is covered with snow and ice during much of the year. A second climatic region is made up of the eastern two-thirds of the U...

• Saskatchewan (province) - Geography.

  The length of the frost-free season varies within the province. In the southwest, particularly in the valley lands along the South Saskatchewan River, the frost-freeperiod ranges from 150 to 160 days. Regina enjoys about 123 frost-free days, and Saskatoon has about 111. The far north has only from 85 to 95 frost-free days. One important characteristic of Saskatchewan’s climate is the great variability in temperature and precipitation from year to year, which is often critical for agriculture.The...

• Saskatchewan (province) - Canadian History.

  The length of the frost-free season varies within the province. In the southwest, particularly in the valley lands along the South Saskatchewan River, the frost-freeperiod ranges from 150 to 160 days. Regina enjoys about 123 frost-free days, and Saskatoon has about 111. The far north has only from 85 to 95 frost-free days. One important characteristic of Saskatchewan’s climate is the great variability in temperature and precipitation from year to year, which is often critical for agriculture.The...

• Massachusetts - geography.

  mi). Other large artificial lakes include Wachusett Reservoir, East Brimfield Reservoir, and Cobble Mountain Reservoir. Assawompsett Pond, covering about 10 sq km(about 4 sq mi), is the largest natural lake. North Watuppa Pond and Long Pond are other large natural lakes. Lake Chaubunagungamaug, near Webster, is usuallycalled Webster Lake, because the Algonquian name is difficult to pronounce and spell. The full version of the Native American name is said to be the longest place-namein North Amer...