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Search results 12991 - 13000 of 22819 matching essays
- 12991: Twinning in Cattle
- ... For years genetic engineers have been working hard on improving economic efficiency in cattle. It is their hope that through genetic research they can improve the yield and the income of cattle producers around the world. Research has shown that twinning is one way that farmers can increase their yield . Twinning has a significant influence on producers as well as people who are involved in all realms of agriculture. The reason ... Taylor, Robert E. Beef Production and the Beef Industry. 1984 Burgess Publishing Company. Minnaepolis. Gregory, J.E. Reproduction in Farm Animals. 1980. Lea & Febinger. Philedelphia Beerepoote, R.H. Reproduction of Farm Animals. 1982. Logman Inc, New York Russell, Perter J. Genetics. 1996. Library of Congress, Washington DC.
- 12992: Octavian Augustus
- ... crumbling republican government to a great and mighty empire. Octavian's government was strong enough to withstand weak emperors who mishandled the Empire. His changes proved to be the cornerstone of the greatest empire the world has ever seen. During the Conflict of Orders, the lower class Romans, or plebeian, forced the upper class Romans, known as patricians, to give them more rights and liberties (Hadas 1969). The Republican government in ... and the comedies performed at the many theaters (Hadas 1969). The Romans are attributed with the development of concrete which enabled them to build large structures such as aqueducts. As Rome grew into the primary world leader, it is Republican government was falling apart. The Senate was ineffective because it had no control of the vast armies that provided power. A strong general who took sole control would immediately be targeted ... next emperor should be. Octavian was so influential that eventually the Romans did not care that they were no longer a Republic. They knew that with Octavian, they could become the greatest empire in the world.
- 12993: The Downy Woodpecker
- ... of their time taking turns at the cavity entrance, heads out, chippering loudly, awaiting the next meal. At 21 to 24 days, the young are ready to leave the cavity on their first flight. A New York observer gave a good acount of a downy family's last few days in the cavity: "The young chattered most of the time during the last two days of nest life. One at a time they looked out a great deal at the strange outer world. They left the nest on on the eleventh of June. The last two, a male and a female, left during the afternoon, each after being fed at the entrance and seeing the parent fly away ...
- 12994: Spiders
- ... Theraphosidae. Related forms such as funnel-web spiders and trap door spiders are also often called tarantulas. The name came from a smaller wolf spider of Europe but was then applied by explorers of the New World to the giant spiders that they encountered. No North American species has a venom that is dangerous to humans, but tarantula body hairs may induce an allergic reaction. Tarantulas can give you a painful bite ...
- 12995: Acid Rain
- ... officials called it the most pressing environmental issue facing the nation. But it is important to bear in mind that acid rain is only one segment, of the widespread pollution of the atmosphere facing the world. Each year the global atmosphere is on the receiving end of 20 billion tons of carbon dioxide, 130 million tons of suffer dioxide, 97 million tons of hydrocarbons, 53 million tons of nitrogen oxides, more ... acid neutralizes chemicals vital for growth, strips others from the soil and carries them to the lakes and literally retards the respiration of the soil. The rate of forest growth in the White Mountains of New Hampshire has declined 18% between 1956 and 1965, time of increasingly intense acidic rainfall. Acid rain no longer falls exclusively on the lakes, forest, and thin soils of the Northeast it now covers half the ...
- 12996: On Darwin's Theory of Natural Selection
- ... seeing several operations performed without anesthesia. He became interested in geology and natural history and was not intrigued by his studies of the holy ordge University. He was sent on a trip to explore the world and while he was on this journey, he became enthralled with biology and geology. He made and wrote observations about coral reefs (1842), and volcanic islands (1844), but his greatest biological observations were those pertaining ... make their bearers better adapted to their particular ecological conditions. Not only does this theory make perfect sense, it is also very simple and difficult to dispute. Darwinism can be compared to the today's world by using an analogy such as, two people apply for a job, one person has the educational background and experience that is required to obtain the job, while the other does not. The person with ... began, and is not even very descriptive at that. Charles Darwin's Theory of Evolution is an easily justifiable way of explaining the process of evolution. His ideas have made an enormous impact on the world, and have revolutionized biology. Though some disagree with Darwin's ideas, they are still worthy of acceptance and should be revered as one of the most intelligent and important biological findings in history.
- 12997: The Language of The Cell
- ... all found in nearly all organs and are associated with nearly all functions. As mentioned earlier, signals are incredibly small, have low energy requirements and weigh approximately one billionth of a gram. Scientists have discovered new signals with the development of extremely effective chemical methods that make it possible to purify them and elucidate their structure. These advances and discoveries lead to a well understood field of protein chemistry. One problem is that new signals are coming out everyday! A point which should be stressed is that the universality of communication implies that no signals are attached exclusively to one organ or function. However, signals do not circulate unrestrictedly ... book. The book went deep into the subject most of the time, and sometimes the reader found this confusing. One negative point discovered by the reader was that the concepts explored in the book were new, confusing and frustrating. Little was understood on neurology, yet the reader made an incredible effort in trying to understand, and make sense of the topic. The reader feels that there are not many books ...
- 12998: Investigation of Reproduction and Development in Animals
- ... uterus for implantation (embryo transfer or ET). Bibliography: Encarta Encyclopedia, Microsoft 96’ Kinnear, Judith, Book One: Nature of Biology, The Jacaranda Press, Sydney, 1992. Winston, Robert, Infertility, A Sympathetic Approach, Optima Book, Great Britian, 1994. World Book Encyclopedia, World Book Inc, Chicago, 1991. The Human Body, World Book Inc, Chicago, 1990.
- 12999: Hammerhead Sharks
- Hammerhead Sharks Marine Science/ Per. 1 Sharks are one of the most feared sea animals. They live in oceans across the world but are most common in tropical waters. There are over three hundred fifty species of sharks. They can be broadly categorized into the following four groups: Squalomorphii, Squatinomorphii, Batoidea, and Galeomorphii. The shark family Sphyrnidae ... them in their growth. Bibliography: Klimley, Peter, "Hammerhead City", Natural History, Oct. 1995, pp 33-38. Martin, Richard, "Why the Hammerhead?", Sea Frontiers, May-June 1989, pp. 142-145. Moss, Sanford, Sharks, Prentice-Hall, 1984. World Book Encyclopedia, Sharks, World Book Inc., 1988.
- 13000: Growth Dynamics of E. coli in Varying Concentrations of Nutrient Broths, pH, and in the Presence of an Antibiotic
- ... maintained throughout the experiment. Aside from temperature, the pH of the organisms environment exerts the greatest influence on its growth. The pH limits the activity of enzymes with which an organism is able to synthesize new protoplasm. The optimum pH of E coli growing in a culture at 37C is 6.0-7.0. It has a minimum pH level of 4.4 and a maximum level of 9.0 required ... would cause a change in the growth rate (Atlas 330). Drugs/Antibiotics are another very common tool in molecular biology used to inhibit a specific process. Chloramphenicol, used in this experiment, inhibits the assembly of new proteins, yet it has no effect on those proteins which already exist( ). The growth dynamics of E.coli were evaluated in individual media trials. By using only one variable the results can be directly correlated ... of chloramphenicol, the drug/antibiotic, the growth rate reaches the stationary phase at time 120 when there are 57,000 cells/mL(experimental). This is due to the fact that chloramphenicol inhibits the assembly of new proteins, yet has no effect on those proteins which already exist. Therefore, in the presence of chloramphenicol, translation was inhibited preventing the cells from growing and dividing (Atlas 371). The growth curve produced by ...
Search results 12991 - 13000 of 22819 matching essays
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