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Search results 5971 - 5980 of 12257 matching essays
- 5971: Genetic Diversity In Agriculture
- ... organisms makes it imperative that the plant be preserved, because it offers a potential for the presence of disease resistant genes not present in cultivated varieties. Also, there are demands for new characters-- for example, high protein, improved nutritional factors, and fertility restoration. As a result, plant breeders require a large and diverse gene pool to meet ever changing needs. A gene bank is a popular term that is used to ... hybrid corn that are planted on more than ninety-seven percent of the total corn acreage in the united states. Government experimental laboratories and commercial seed companies shared in the research and development of the high-yield plant varieties that provide such superior characteristics as resistance to cold, drought, diseases, and pests. Improvements in livestock, such as more efficient use of feed, has added greatly to the annual farm output. Such ...
- 5972: Transitions of Reptiles to Mammals
- ... of food and air and allows breathing during mastication (chewing) or suckling). Hair for insulation correlates with endothermy (being warm-blooded), the physiological maintenance of individual temperature independent of the environmental temperature, and endothermy allows high levels of sustained activity. the unique characteristics of mammals thus would seem to have evolved as a complex interrelated system. Transitions to New Higher Taxa Transitions often result in a new "higher taxon" (a new ... automatically makes this animal a true "mammal". - Peramus (late Jurassic) - An advanced placental-type mammal. The closest known relative of the placentals and marsupials. Has attained a fully mammalian three- boned middle ear with excellent high-frequency hearing. - Steropodon galmani (early Cretaceous) - The first known monotreme (egg laying mammals). - Pariadens kirklandi (late Cretaceous) - The first definite marsupial. - Kennalestes and Asioryctes (late Cretaceous) - Small, slender animals; eyesockets open behind; simple ring to ...
- 5973: Hamlet A Critical Analysis
- ... immature, sarcastic and takes action in the heat of passion witch is very much like the radical behavior of today s youth. Hamlets' maturity level for his time was low specially him having such a high position. He is extremely offensive to people, such as the king the queen. An immature, mouthy, extremist is, the inability to love maturely, and rudeness towards authority are just of few off the things that ... leaving for France although both individuals despise each other they are both infatuated with her. . Leartes is also similar to Hamlet in the way that he associates with his family. Laertes and Hamlet hold a high admiration for their fathers immediately seeking revenge on the assassin. They both exhibit domineering attitudes toward females. Leartes able to control Ophelia s opinion of Hamlet and his general attitude towards women. In the same ...
- 5974: Albert Einstein
- Albert Einstein Albert Einstein was born in Germany on March 14, 1879.As a kid he had trouble learning to speak. His parents thought that he might be mentally retarded. He was not smart in school. He suffered under the learning methods that they used in the schools of Germany at that time so he was never able to finish his studies. In 1894 his father's business had failed and the family moved to Milan, Italy. Einstein who had grown interested in science, went to Zurich, Switzerland, to enter a famous technical school. There his ability in mathematics and physics began to show. When Einstein was graduated in 1900 he was unable to get a teaching appointment at a university. Instead he got a clerical job in the ...
- 5975: The Aging Process
- ... woman's interest in sex. Estrogen will maintain her organs in a state of sexual readiness. Estrogen replacement helps to prevent the loss of sexual interest and function. The healthy older male continues to produce high levels of testosterone for life. The testicles clearly have a different age cycle from the ovaries. The failure of sexual performance in most older males is not related to lower testosterone levels. The failure to have an erection is usually related to poor circulation because of disease, changes in nerve fibers that control erection because of diabetes and other illness, or to medicines as used in the control of high blood pressure. The decrease in sexual activity in healthy older men seems to be related to opportunity and attitudes rather than hormone levels or real aging. THE SENSE ORGANS The special senses, such as hearing ...
- 5976: Albert Einstein
- ... officially to relinquish his German citizenship in favor of Swiss. In 1895 Einstein failed an examination that would have allowed him to study for a diploma as an electrical engineer at Zurich. After attending secondary school at Aarau, Einstein returned (1896) to the Zurich Polytechnic, graduating (1900) as a secondary school teacher of mathematics and physics. He worked at the patent office in Bern from 1902 to 1909 and while there he completed an astonishing range of theoretical physics publications, written in his spare time without ...
- 5977: Crazy Horse
- ... as they were passing, a few miles south of Fort Laramie, an Indian stole a cow. The Mormons reported this to Lieutenant Hugh B. Fleming, the commander of the post. Fleming demanded that the offender, High Forehead of the Minneconjou, face charges. Chief Conquering Bear suggested that the Mormons come to his herd of ponies and pick out the best pony he had to replace the cow, which to the Sioux ... war the American economy was booming. Railroad stocks led the way. On, September 18 1873, banking crashed. Farm prices plummeted, grasshopper plaques ruined crops, yellow fever struck in the Mississippi Valley, and unemployment went sky high. The government figured that it's role was to pour money into the economy. The gold supply was insufficient. President Grants solution to the economy was to open new territory for exploration. So in the ...
- 5978: Human Evolution and the Fossil Record
- ... 40 is a gas, it is released. The ratio of argon-40 released to potassium-40 still present allows for a date to be assigned to objects near the sample. However, due to potassium's high half-life (1.3 billion years), it is only useful as a dating technique for finds older than 500,000 years old. Also, it is only useful where volcanic activity existed. Both these methods have ... capacity of 650 cm3. Skulls found of this hominid also feature a bulge of "Broca's area," an area essential for human speech. It was also taller than the previous hominids, averaging around 5 feet high. At about the same time as Homo habilis and some of the other Homo species, other hominid species belonging to the Australopithecus genus, are believed to have co-existed. These include A. robustus, A. boisei ...
- 5979: Vietnam And LbJ
- ... however, this was mainly to look tough in front of his rival Goldwater. This incident became known as the Gulf of Tonkin Incident. "We knew that the hostile actions against the US ship on the high seas of the Gulf of Tonkin, have today required me to order the military forces of the USto take action and refire." (LBJ) This incident triggered the Viet Cong to try and overtake South Vietnam ... in." (Clark Clifford -sec. of def.) Not only were thousands of Vietnamese and American lives lost but LBJ's dreams and presidency seemed to die as well. The cost of the war was simply too high to keep the 'Great Society' going and everyone else around LBJ was fed up with the war. They wanted America out. Eventually when Johnson finally got it through his head that he was the most ...
- 5980: Reproductive Medicine
- ... wish to become parents? The advances in science and medicine have led to the increase in ethical disputes. For many couples desperate to have children, fertility procedures are a momentous opportunity, which come with a high price. According to the New England Journal of Medicine, in 1994, the fertility industry cost the US Health-care system between $60,000 and $110,000 for each successful pregnancy. Not only are these operations ... wish to become parents? The advances in science and medicine have led to the increase in ethical disputes. For many couples desperate to have children, fertility procedures are a momentous opportunity, which come with a high price. According to the New England Journal of Medicine, in 1994, the fertility industry cost the US Health-care system between $60,000 and $110,000 for each successful pregnancy. Not only are these operations ...
Search results 5971 - 5980 of 12257 matching essays
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