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Science and Nature Term Papers and Reports
Acid Rain
1940 Words - 8 Pages

.... create it. However because of the difficulty and cost of properly disposing of these products they are often emitted into the atmosphere with little or no treatment. The term was first considered to be important about 20 years ago when scientists in Sweden and Norway first believed that acidic rain may be causing great ecological damage to the planet. The problem was that by the time that the scientist found the problem it was already very large. Detecting an acid lake is often quite difficult. A lake does not become acid over night. It happens over a period of many years, some times decades. The changes are usually to gradual for them to be noticed early. At the ....


Chemistry Hits The Beach
998 Words - 4 Pages

.... lotions and creams being slathered on everyday. These lotions are, usually, sunscreens or sunblocks, meant to protect us from the blisters, the pain, and in general to keep our youthful glow lasting just a few years longer. A sunguard is a cream designed to protect one's skin from being sunburned. Our bodies are incrementally damaged by each new exposure to the sun, and this damage can later be seen in the form of wrinkles, blotchy skin and even skin cancer. Sunscreens have evolved a goodly amount over the years. Christopher Columbus noticed in 1492 that the natives of Hispaniola would protect themselves with red paint, as to avoid sun damage. The ancient Greeks, who trained ....


Creation Versus Evolution
1119 Words - 5 Pages

.... should be dedicated to the presentation of theories that dispute those of Darwin (Nowicki). The scientific society, a neutral party, and the Christian community all have their opinions and insight regarding this matter. Evolutionists feel strongly about their stance on the issue of presenting creationism to America's classroom. They feel that by bringing this medium into schools, the Christians will be able to "further advance their various agendas" (Flank) by forcing their religious beliefs on students who do not believe in God, or in the same god. This is where the separation of Church and State comes into play. Evolutionists are adamant about keeping religion out of s ....


After The Atomic Bomb
2470 Words - 9 Pages

.... involved in building the first atomic bombs has grown into the creation of nuclear weapons that are potentially 40 times more powerful than the original bombs used. However, a military change in strategy has came to promote nuclear disarmament and prevent the usage of nuclear weapons. The technology of building the atomic bomb has spurred some useful innovations that can be applied through the use of nuclear power. The fear of a potential nuclear attack had been heightened by the media and its release of movies impacting on public opinion and fear of nuclear devastation. The lives lost after the detonation of the atomic bombs have become warning signs that changed g ....


E.r., The Golgi Body And
1185 Words - 5 Pages

.... and storage vessel. Amino acid chains, freshly synthesised by the ribosomes, slide through tiny holes in its membrane into the cisternae, where they remain until they are sent elsewhere in the cytoplasm, or to the cell edge where they are secreted or incorporated into the cell membrane. The membranes of the ER usually form a tightly packed and flattened sac-like structures, that form inter-connected compartments within the cytoplasm. The internal space formed by the membrane sheets is known as the ER lumen. In most cells the ER lumen forms a single internal compartment. The membranes of other organelles are not connected to the ER and appear to form separate distinct ....


Phosphates
865 Words - 4 Pages

.... Phosphates have caused increasing attention recently. The focus is on the environmentally harmful effects in household detergents. Wastewater, from laundering agents, contains phosphates, which are said to be a water pollutant. Most laundry detergents contain approximately 35% to 75% sodium triphosphate (Na5P3O10), which serves two purposes. Providing an alkaline solution (pH 9.0 to 10.5) is necessary for effective cleansing and also to tie up calcium and magnesium ions found in natural waters and prevent them from interfering with the cleansing role of the detergent. Eutrophication is the progressive over-fertilization of water, in which fest ....


Early Intervention And
1118 Words - 5 Pages

.... (1997), is " a disorder characterized by extreme withdrawal, self-stimulation, cognitive deficits, language disorders, and onset before the age of thirty months." Although the cause of autism is not completely understood, it is known that it has something to do with a neurological or biochemical dysfunction. Contrary to what was originally thought, autism is not a form of mental retardation. It manifests itself in varying degrees of severity, from profound to mild. Dr. Temple Grandin is an assistant professor at Colorado State University who was diagnosed as autistic at a young age, yet with proper help, she continued through school and earned a Ph.D. Autism is usually ....


Dingo
554 Words - 3 Pages

.... and the tiger cat. That competition is pobably what made these animals move to Tasmania which the never reached. es donÕt form packs like other wild dogs, they either live alone or in small families. es mate for life and mate once a year. The families have home territories that they rarely leave. families may co-operate to catch large animals. es chase their prey. They wear them out in a long chase because they arenÕt very fast runners. Large animals are chased until the es can catch them or until the weaker ones drop back. es donÕt always get their prey, however kangaroos can lean back on their tails and kick hard enough to rip open a Õs stomach. Th ....



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