34 résultats pour "nests"
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Ant - biology.
The workers of many ant species carry a stinger within the hind end of the gaster. These ants use the stinger to defend against their enemies. In some species, workerants lack a stinger but use the tip of their gaster to squirt or dab poison at other small animals and when fighting battles with other ants, fending off predators, or killinginsects or other animals that they use as food. III PHYSIOLOGY Ants have a rigid, external skeleton called an exoskeleton that gives the soft, inner body its...
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Honey Bee - biology.
B Reproduction and Development The queen controls the sex of her offspring. When an egg passes from her ovary to her oviduct, the queen determines whether the egg is fertilized with sperm from thespermatheca. A fertilized egg develops into a female honey bee, either worker or queen, and an unfertilized egg becomes a male honey bee, or drone. The queen lays the eggs that will develop into more queens in specially constructed downward-pointing, peanut-shaped cells, in which the egg adheres to the...
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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...
- Marley (Robert Nesta.
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Birds.
Birds need much less sleep than people do. One seabird, called the sooty tern, can fly for years bytaking “naps” that last only a few seconds. Most birds that live on land are active during the day and sleep at night. Owls are just the opposite.They sleep during the day and hunt at night. Birds usually sleep in shrubs, on tree branches, in holes in trees, or on the ground. Most ducks sleep onthe water. Many birds sleep while they are standing. MATING AND BREEDING Many kinds of birds have only on...
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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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Eagle - biology.
States, is a member of this group found only in North America. It is named for its snow-white head. However, the name bald does not refer to a lack of feathers but comes instead from an outdated word meaning marked with white, as in piebald. The adult bald eagle is blackish brown, with a white head and tail. Its bill, legs, and feet are bright yellow. The bill, which is longer and heavier than the gray bill of golden eagles, is useful for piercing the skin of fish. Bald eagles vary in size....
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Penguin - biology.
B Parents and Offspring Once female penguins lay their eggs, both the parents incubate the eggs. The incubation period varies according to species, ranging from 33 days for the little penguinto about 63 days for the emperor penguin. In most medium-sized penguins incubation takes 35 to 38 days. The incubation routine is highly variable among penguinspecies, although in general both sexes participate in incubation and feeding of young. Male and female Adélie penguins take turns incubating their e...
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Animal Behavior - biology.
The first motor program analyzed in much detail was the egg-rolling response of geese. When a goose sees an egg outside its nest, it stares at the egg, stretches itsneck until its bill is just on the other side of the egg, and then gently rolls the egg back into the nest. At first glance this seems a thoughtful and intelligent piece ofbehavior, but it is a mechanical motor program; almost any smooth, rounded object (the sign stimulus) will release the response. Furthermore, removal of the egg on...
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Fish - biology.
pectoral fins provide fine movements, add forward thrust, or, together with the pelvic fins, serve as brakes. Typically, fins consist of a thin membrane stretched over afanlike series of thin rods called spines or rays. Most fish breathe underwater with the help of special respiratory organs called gills. Gills are made of a series of thin sheets or filaments through which blood circulates.As water moves into a fish’s mouth and passes over the gills, dissolved oxygen passes across the thin gill...
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Ants.
Maybe you help with chores at home. Maybe you play
After the queen mates with a male ant, she makes or finds a nest. She then lays eggs. The first group ofeggs to hatch become worker ants. The queen’s only job after that is to lay more eggs. The worker antstake over the job of caring for the nest. Males come from some of the eggs, queens and more workerscome from other eggs. When the egg hatches, a wormlike larva appears. It does nothing but eat and grow. When it gets bigenough, it becomes a pupa. The pupa grows legs and antennae. It becomes an...
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Dinosaur - biology.
The behavior of dinosaurs was governed by their metabolism and by their central nervous system. The dinosaurs’ metabolism—the internal activities that supply thebody’s energy needs—affected their activity level. It is unclear whether dinosaurs were purely endothermic (warm-blooded), like modern mammals, or ectothermic (cold-blooded), like modern reptiles. Endotherms regulate their body temperature internally by means of their metabolism, rather than by using the temperature oftheir surroundin...
- Ruy Blas ; Le Modele de la tragedie Classique nest pas respecté
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Animal Courtship and Mating - biology.
activity. These animals frequently copulate in water, and the penis helps transfer sperm before it is carried away by the currents Ostriches and rheas also contain apenis within the cloaca. Virtually all snakes and lizards display yet another variation of internal fertilization. Located in the tail are two penises, called hemepenes, which are covered by spinesand knobs that help lock it into place during mating. The male uses one hemepene at a time for copulation. Male salamanders secrete large...
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Bee - biology.
wood. They have long tongues and are excellent pollinators of many plants. They carry their pollen on brushy areas near the middle of the hind leg. Carpenter bees are also in the digger bee family. The most familiar bees are the honey bees and their close relatives. In this family are bees that make intricate nests and live in complex societies. The pollen-carrying structure in these bees is a smooth, bristle-surrounded area on one segment of the hind leg. This structure is known as a pollen...
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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...
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Owl - biology.
Among the largest species of typical owls are the eagle owls. They have tufts of feathers on their heads that are called “ears.” The great horned owl is the only eagleowl found in the Americas. It is about 60 cm (25 in) in length with a wingspan of 1.4 m (60 in). Numerous species of eagle owls inhabit Europe, Africa, and Asia. Mostwidely distributed is the northern eagle owl, found from Scandinavia and Spain to Japan. It is about 71 cm (28 in) long with a wingspan of about 2m (72 in). Nearly asl...
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Bees.
It's a warm summer afternoon in a park or garden.
become the queens. When a honey bee finds food, it tells other honey bees. The bee comes back to the hive with nectar. Itthen performs a dance. The bee’s movements tell the other bees where to look for this nectar. BUMBLEBEES If you go on a picnic, a yellow and black bumblebee may buzz by. Bumblebees have thick, hairy bodies.Their hair helps keep them warm. Only the queens live through the winter, however. The workers anddrones die. Like honey bees, bumblebees live in colonies. Bumblebees like t...
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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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Turtle.
Turtles use their jaws to cut and handle food. Instead of teeth, a turtle’s upper and lower jaws are covered by horny ridges, similar to a bird’s beak. Meat-eating turtlescommonly have knife-sharp ridges for slicing through their prey. Plant-eating turtles often have ridges with serrated edges that help them cut through tough plants.Turtles use their tongues in swallowing food, but unlike many other reptiles, such as chameleons, they cannot stick out their tongues to capture food. C Limb Structu...
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Turtle - biology.
Turtles use their jaws to cut and handle food. Instead of teeth, a turtle’s upper and lower jaws are covered by horny ridges, similar to a bird’s beak. Meat-eating turtlescommonly have knife-sharp ridges for slicing through their prey. Plant-eating turtles often have ridges with serrated edges that help them cut through tough plants.Turtles use their tongues in swallowing food, but unlike many other reptiles, such as chameleons, they cannot stick out their tongues to capture food. C Limb Structu...
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Ameisen - Tiere.
Geflügelte Rote WaldameisenIm Frühsommer verlassen geflügelte Geschlechtstiere (Männchen und Königinnen) der Roten Waldameise ihren Bau und beginnen denso genannten Hochzeitsflug. Danach paaren sich die Ameisen am Boden, und die Männchen sterben. Die Königinnen werfen ihreFlügel ab und begründen eine neue Kolonie.Gemino Multimedia GmbH Die vier Lebensstadien einer Ameise sind Ei, Larve, Puppe und Erwachsenenstadium. Aus den winzigen weißen oder gelblichen Eiern, welche die Königin legt, schlüpfe...
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Oscar-Preisträger.
Beste RegieJAHR NAME ORIGINALTITEL DEUTSCHER TITEL 1929 Lewis MilestoneFrank Borzage Two Arabian KnightsSeventh Heaven SchlachtenbummlerIm siebenten Himmel 1930 Frank Lloyd The Divine Lady Die ungekrönte Königin 1930 Lewis Milestone All Quiet on the Western Front Im Westen nichts Neues 1931 Norman Taurog Skippy - 1932 Frank Borzage Bad Girl - 1934 Frank Lloyd Cavalcade Cavalcade 1935 Frank Capra It Happened One Night Es geschah in einer Nacht 1936 John Ford The Informer Der Verräter 1937 Frank C...
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A GÊNESE DO CAPITALISMO E CONEXÕES COM O INDIVIDUALISMO
2 A GÊNESE DO CAPITALISMO E CONEXÕES COM O INDIVIDUALISMO Edson Antunes Quaresma Júnior * RESUMO Entre as referências principais da vida humana , se encontram o capitalismo e o individual ismo . Es tes , por sua vez, são oriund os dos mais diversos contatos das pessoas com escalas sociai s espec íficas, em dimensões de espaço tempo particulares. A realidade se influencia então de um reflexo das introjeções de valores capitalistas...
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Verhaltensforschung - Biologie.
einem vibrierenden Bleistift berührt, findet die Eiablage statt, obwohl das Weibchen sehen kann, dass es sich nicht um einen männlichen Stichling handelt. Das Männchen,das den letzten Teil seines Tanzes nicht ausgeführt hat, weigert sich jedoch, die Eier zu befruchten, sondern frisst sie auf. 3.2 Modale Bewegungsabläufe Eine zweite wichtige Entdeckung der Ethologen war die Erkenntnis, dass sich viele komplexe Verhaltensmuster hinter so genannten modalen Bewegungsabläufen verbergen (früher Erb...
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Fruit - biology.
from a flower with several pistils. The ovary may have a single compartment, or carpel, which houses the ovule or ovules. Or the ovary may consist of two or morecarpels, each of which may contain one or more ovules. A drupe develops from an ovary with a single carpel and is characterized by an edible exocarp and mesocarp and an inedible, hard endocarp, or pit that encloses asingle seed. Cherries, peaches, apricots, and plums are examples of drupes. Almonds also are classified as drupes, but in a...
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Fungus - biology.
Many fungi can reproduce by the fragmentation of their hyphae. Each fragment develops into a new individual. Yeast, a small, single-celled fungus, reproduces bybudding, in which a bump forms on the yeast cell, eventually partitioning from the cell and growing into a new yeast cell. V CLASSIFICATION OF FUNGI Scientists have long disagreed about how to classify fungi, and the classification systems are still developing. The first description of fungi was published in 1729 byItalian botanist Pier...
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Lévinas
1906 -1995
« La morale nèst pas une branche de la
philosophie. mais la philosophie première. ,.
Totalité et...
Lévinas 1906 -1995 « La morale nèst pas une branche de la philosophie. mais la philosophie première. ,. Totalité et infini Éléments de biographie t la découverte de la phénoménologie Né en Lituanie dans une famille juive pratiquante, Emmanuel Lévinas, qui sera naturalisé français en 1930, vit d'abord en Russie où se sont exilés ses parents lors de la guerre 1914-1918. C'est en France, puis en Allemagne auprès de Husserl et de Heidegger, qu'il s'initie à la philosophie. Lévinas fait connaître...
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Eagles.
THREATS TO EAGLES Eagles do not like to live near people. Because they are such big birds, they need lots of room to hunt.People have moved into wilderness areas where eagles lived and built farms and cities. People have alsohunted eagles. Chemicals used in farming have reduced the number of eagles. Many kinds of eagles,including the American bald eagle, became endangered during the 20th century. Some governments have passed laws to protect eagles. Conservation groups also worked to help savethe...
- L'Histoire est elle le règne du hasard ?
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portugal e a segunda guerra mundial
importante para o eixo porque lhe permite tomar controlo do mar e ter acesso a frota dos britânicos no mar mediterrâneo. A frota Itália poderá também sair ajudando os alemães na toma da Inglaterra. Mas a operação Felix dependia, em grande parte da Espanha e da decisão de Franco. A Espanha não tinha meios suficientes para defender o seu território devido a guerra civil que devastou grandemente a economia do país. O ataque de Gibraltar podia também levar a perda das ilhas canárias que eram pro...
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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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COMÉRCIO PROFANO E PERTURBAÇÃO ESPIRITUAL: A SIMONIA NAS SIETE PARTIDAS DE ALFONSO X (SÉC. XIII)
2 Quando se pretende examinar a simonia num recorte h istórico e documental específico as Siete Partidas é conveniente explicitarmos a sua natureza e con strução. Neste sentido, partiremos do pressuposto que a soci edade cristã que se enfrenta a simonia é de tipo corporativo. Portanto, nosso objetivo é fazer um exercício de interpretação histórica que permita compreender a simonia em seu contexto socia l, e não apenas institucional. Temos por finalid...