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Search results 1451 - 1460 of 2278 matching essays
- 1451: Acid Rain, Effects And Causes
- ... can damage or destroy aquatic life, forests, crops and buildings, as well as posing a threat to human health. The actual term "acid rain" was first used over one hundred years ago by British chemist Robert Angus Smith. At that time, he realized that smoke and fumes from human activities could change the acidity of precipitation. Unfortunately his awareness was not considered an environmental concern until the 1950's. Around this ...
- 1452: Acid Rain 10
- ... it clogs up the stomata in the leaves which prevents photosynthesis. Also, nitrogen oxide and nitric oxide can force trees to grow into late autumn when it is time to get ready for the severe frost of the winter. One of the most direct effects that acid rain has on the earth is on our water systems, such as lakes, rivers, streams, etc. Some of the chemicals can enter as dry ...
- 1453: Aids 5
- ... show is one to five years. Public awareness of this disease gradually built up as more respected victims began to die: actor Rock Hudson (1985), clothes designer Perry Ellis (1986), choreographer Michael Bennett (1987), photographer Robert Mapplethorpe (1989), and Oscar-winning director Tony Richardson (1991). When basketball superstar Magic Johnson announced in 1991 that he had gotten the AIDS virus, the feeling spread quick that anyone, not just selected groups of ...
- 1454: Autism 3
- ... Associated Conditions. Handbook of Autism and Pervasive Developmental Disorders. Eds. Donald Cohen and Anne Donnellan. Silver Spring, Maryland: V.H. Winston & Sons, 1987. 20-60 Frith, Uta. Autism. Scientific American June 1993: 108-114. Hamblin, Robert. The Humanization Processes. New York: Wiley Interscience, 1971. Johnson, Ernestine. Personal Interview. 22 April, 1998. Paluszny, Maria J., M.D. Autism. New York: Syracuse University, 1979. Robinson, Tamara. Personal Interview. 22 April, 1998. Volkmar, Fred ...
- 1455: Antibiotic Resistance 2
- ... of as one huge multicellular organism in which the cells interchange their genes with ease. Bacteria have evolved several ways to share their resistance traits with one another [see "Bacterial Gene Swapping in Nature," by Robert V. Miller; Scientific American, January]. Resistance genes commonly are carried on plasmids, tiny loops of DNA that can help bacteria survive various hazards in the environment. But the genes may also occur on the bacterial ...
- 1456: Aids 3
- ... the unborn child will almost positively receive the virus before, during, or after the pregnancy. The viruses which cause AIDS, otherwise known as Human Immunodeficiecy Viruses(HIV) were first discovered in 1983 cooperatively by Dr. Robert Gallo of the National Cancer Institute and Dr. Luc Montagnier of the Pasteur Institute in France. Aids is caused mainly by the HIV-1 virus, while the HIV-2 virus is less pronounced among those ...
- 1457: American Crocodile
- ... July 4, 1992 Curvier, 1807, www.bio.bris.ac.uk/research/crocs/csp_cacu.htm Gatorland, www.gatorland.com Guggisberg, C.A.W., Stackpole Books, Pennsylvania 1972 Levy, Charles, Quintet Publishing Limited, London, 1991 McClure, Robert, Sun-Sentinel, August 13, 1995, 1A Miller, Jill Young, Sun-Sentinel, July 29, 1993, 1E Ross, Charles, A. Facts on File, New York, 1989 Species Accounts, www.flmnh.ufl.edu/natsci/herpetology/act-plan/cacut ...
- 1458: The Effects Of Acid Rain On Lakes And Trees
- ... weaken and poisons it with toxic substances that are slowly released from the soil (EPA). When the trees weaken from the acid, it has a harder time fighting off adversaries such as fungi, diseases, and frost so subsequently it dies. Around the 1970s the acid rain dilemma got worse, the acid rain has put trees in danger and now they are starting to die off. The effects of acid rain on ...
- 1459: Appalacian Regional Commission & Poverty In Appalachia
- ... map, http://www.arc.gov/infopubs/poldocs/budget99/maps/distress.htm ARC- Employment rate map, http://arc.gov/data/employ/empmain.htm ARC-Socioeconomic Data, http://arc.gov/data/datamain.htm Bassi, Louis J., & Lerman, Robert I. \\"Reducing the Child Support Welfare Disincentive Problem,\\" Journal of Policy Analysis & Management, v.15, Winter 1996, pp.89-96. Bassuk, Ellen L. \\"Putting Poor Mothers To Work,\\" American Journal of Orthopsychiatry, v.66, Oct ...
- 1460: Cuba And Embargo
- ... subsidiaries of U.S. companies from trading with the country. The bills goal was to cripple the Cuban economy in order to bring down Castro within weeks, according to the bills primary advocate Robert Torricelli (D-N.J.). The Helms-Burton Act states that American citizens can sue foreign investors who utilize American property seized by the Cuban government. In addition, those who traffic in this property or profit ...
Search results 1451 - 1460 of 2278 matching essays
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