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Search results 6041 - 6050 of 8618 matching essays
- 6041: All Public Schools Are Not Cre
- ... offered at all levels from pre-kindergarten to graduate school. Elementary and secondary education involves twelve years of schooling the successful completion of which leads to a high school diploma. A distinct feature of the American educational system is its decentralized organization. Three levels of government - local, state, and federal financially support elementary and secondary education. Furthermore, it is divided into public and private institutions. The main disadvantage of decentralization is ...
- 6042: Steps Towards an Ecosociety: Dealing with Air Pollution
- ... on the environment or we are doomed to keep on repeating our mistakes. Another example could be what has become known as the Dust Bowl of the 1930's. "Perhaps the largest forced migration in American history was the mass departure from Kansas, Oklahoma, Texas, parts of New Mexico, Colorado, Nebraska and other plains during the period of the early 1930's... (Gore 71). The Dust Bowl resulted in huge sand ...
- 6043: Thoeries of Evolution
- ... natural selection the gene frequencies change so that advantageous genes occur in greater proportions(Ardrey 24). As the new evolutionary theory became enriched from such diverse sources, it became known as the synthetic theory. Three American scientists made controbutions that were especially important. The German-born Ernst Mayr, a zoologist, showed that new species usually arise in geographic isolation, often following a genetic turn that quickly changes the contents of their ...
- 6044: The Chaos Theory
- ... understand disorder in the atmosphere, the turbulent sea, the oscillations of the heart and brain, and the fluctuations of wildlife populations. All of these things were taken for granted until in the 1970's some American and European scientists began to investigate the randomness of nature. They were physicists, biologists, chemists and mathematicians but they were all seeking one thing: connections between different kinds of irregularity. "Physiologists found a surprising order ...
- 6045: Nuclear Energy: Uranium Fission
- ... need for more than 2.5 billion barrels of oil at an estimated cost of $66 billion, giving the United States greater energy security and economic strength (Keepin 12). Not only does nuclear energy keep American dollars at home, it keeps Americans at work, with an estimated 400,000 people employed in nuclear-related jobs. There should not be a question of coal or nuclear power. What we need is a ...
- 6046: Earthquakes
- ... disastrous Good Friday earthquake of 1964 is an example of such an event. Seismologists have devised two scales of measurement to enable them to describe earthquakes quantitatively. "One is the Richter scale named after the American seismologist Charles Francis Richterwhich measures the energy released at the focus of a quake. It is a logarithmic scale that runs from 1 to 9; a magnitude 7 quake is 10 times more powerful ...
- 6047: Comets
- Comets A comet is generally considered to consist of a small, sharp nucleus embedded in a nebulous disk called the coma. American astronomer Fred L. Whipple proposed in 1949 that the nucleus, containing practically all the mass of the comet, is a dirty snowball conglomerate of ices and dust. Major proofs of the snowball theory rest on ...
- 6048: Black Holes
- ... itself is oscillating. Though gravitational waves pass straight through matter, their strength weakens as the distance from the original source increases. Although many physicists doubted the existence of gravitational waves, physical evidence was presented when American researchers observed a binary pulsar system that was thought to consist of two neutron stars orbiting each other closely and rapidly. Radio pulses from one of the stars showed that its orbital period was decreasing ...
- 6049: Castro
- ... his relationship with the United States soured quickly and warmed just as fast with the USSR In 1961 the Americans hatched a plan to overthrow Castro and his government by using Cuban exiles and no American soldiers. On April 17, the Cuban exiles landed in The Bay of Pigs, Cuba. The mission was a disaster before it got started 114 men died and 1200 were captured and then ransomed of the ...
- 6050: Genetics Engineering
- ... Many believe that the Internet and online services will lead to the elimination of personal privacy. Genetic and bioengineering just maybe the end to human nature. Article Citations Elmer-Dewitt, Philip (1994, January). The Genetic Revolution. TIME Magazine, Vol. 143 No. 2
Search results 6041 - 6050 of 8618 matching essays
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