... great distance at a good speed. Looking at a polar bear you will probably notice that it is bowlegged. This means that their huge paws point inward. Having their paws in this position helps them grip the slippery ice. Another specialized feature of its paws is that they have pads of dense fur on the bottoms. Polar bears are the only bears that have this feature. These pads help the bear retain heat and to grip the ice and provide better traction. Polar bears are fast movers. When on uneven ice the bear will “trot”, moving its legs on opposite sides in unison. It can trot at 12 to 18 miles per hour. When it is running, it can reach speeds of up to 35 miles ...

... the world are being destroyed everyday. These rainforests are being destroyed by human efforts which are centred around greed. Oil companines drilling for oil, logging companies, and fires are the leading causes in destroying the last Nigerian Rainforest. Rainforests cover only two percent of the entire earth’s surface.1 It is estimated that ninety-five percent of Nigeria’s rainforest has been destroyed. A Hong Kong company is logging out of Nigeria for the use of ply-wood, toothpicks, veneer, and chopsticks.2 People need to become more educated about the importance of the rainforest. If people knew more, then niether the rainforest in ...

... hace muy poco tiempo, las corporaciones confiaban en equipos y programas propietarios para la instalación de redes en sus computadoras, un proceso costoso y que lleva tiempo de realizar, convirtiéndose en mucho más difícil cuando las oficinas de la compañía se encuentran repartidas por todo del mundo. Incluso en las mejores condiciones, el compartir información entre programas, formatos de archivo y plataformas diferentes no es una tarea sencilla. Por medio de la misma tecnología que se aplica a Internet, las intranets solucionan este problema, consiguiendo que las comunicaciones y colaboraciones internas sean mucho más sencillas. Las intranets usan TCP ...

... reefs, barrier reefs, and atolls. Fringing reefs are located close to shore, separated from land by only shallow water. Barrier reefs lie farther offshore, separated from land by lagoons more than ten meters deep. Atolls, on the other hand, are formed far offshore and they make a ring-shaped reef that close a circular lagoon. Coral reefs are the largest biological structures on the planet, with the largest being the Great Barrier Reef covering over 2000 kilometers along the East Coast of Australia. The reef is said to be 500,000 to 2,500,000 years old and is said to be visible from the moon. There is only one problem with this beautiful structure and that is t ...

... family, Pongidae. If the single grouping, Hominidae, is used, the separate human line in the hominid family is distinguished by being placed in a subfamily, Homininae, whose members are then called hominines—the practice that is followed in this article. An examination of the fossil record of the hominines reveals several biological and behavioral trends characteristic of the hominine subfamily. Bipedalism Two-legged walking, or bipedalism, seems to be one of the earliest of the major hominine characteristics to have evolved. This form of locomotion led to a number of skeletal modifications in the lower spinal column, pelvis, and legs. Because these changes can b ...

... is a tumor that is fairly larger than other types. They don’t form keratin but they are common in smokers. They develop in the central or peripheral part of the lungs and the lymph glands. Small cell carcinoma tumors are small and fragile. They are divided into groups by their shapes. The term “oat cell carcinoma” is used to develop in smokers and usually in the central part of the lung. They spread by the lymph glands and into the blood stream early. This type of tumors can only be seen through an electron microscope on high magnification. A rare type of lung cancer, which develops from hormone producing cells are carcinoid tumo ...

... out,’ or, originally, ‘to bloom.’” Many people were misdiagnosed due to the similarities between these diseases, and the fact that they can occur in milder or more sever forms leading to an overlap of the most obvious symptoms. (7) Chickenpox mostly occurs in children classifying it as a childhood disease although it can occur in adults who are not yet immune to it. This could lead to the belief of chickenpox being one of the oldest diseases. Since the chickenpox infection has two phases, one most common during childhood then a latent form that can become active again later in the persons life, doctors believe that this reactivation would start the cycle all ...

... unemployment, our finance system and personal safety. Life and death situations could arise as hospital systems such as, life support and machines used to monitor a patients vital signs are among the systems at risk. Australian hospitals believe that as many as 60% of their machines may not work properly when the date rolls over. Local testing has identified the ultrasound machines and central monitors which have exhibited year 2000 failures. There could be significant threats to personal safety, for example if an ultrasound wrongly calculated the size of a faetus or administered radiation therapy incorrectly. Also people with heart pace makers could face the ...

... increased output represents a major achievement for applied genetics. In 1929 practically no hybrid corn was grown among the 100 million acres of corn in the United States. But by 1970 the vast majority of 67 million acres was planted with the hybrid variety, yielding twice as much corn. Plant breeders have a definite advantage over animal breeders, because they can often produce fertile varieties - indeed, new species - by crossbreeding between species. This is because hybrids are often polypoid. Polyploidy, as we know, can occur naturally in the wild. Some species of cotton that we grow are polypodies that probably arose originally by accidental cros ...

... likely to be found in swamps, bogs, damp heaths and muddy or sandy shores. Drosophyllum lusitanicum from Portugal and Morocco is the one exception, it grows on dry gravelly hills. Like other green plants, carnivorous plants contain the organic pigment chlorophyll. This pigment helps to mediate a chemical process called photosynthesis. This converts light energy into the chemical bond energy of carbohydrate which is utilized as cellular energy, plant growth and development. Water, carbon dioxide, nutrients and minerals are also needed for survival. In wetlands, where stagnate water contains acidic compounds and chemicals from decaying organic matter many plants h ...