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» Browse Science and Environment Term Papers
Malibu Fires
Number of Words: 2537 / Number of Pages: 10
... society to agriculturists, they
settled in communities. Homes built among the wild brush were perfect prey to
wildfires. Initially, wildfires were put out immediately and people were barred
from setting fires in open spaces. Due to the policy of fire suppression, only
one percent of all wildfires escaped early control. The land was safe from
fires temporarily, but this set the stage for catastrophe as the brush grew more
dense.
There have been more than 20 catastrophic wildfires in Los Angeles
County since the beginning of organized fire protection. The first "big one"
happened in December ...
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The Stroop Phenomenon
Number of Words: 995 / Number of Pages: 4
... The fourth experiment, with the introduction of less common
objects, subjects could name the words faster than generating a category
name for the words. Naming pictures are prone to interference when
incongruent words are presented simultaneously. Word naming is not as much
influenced by distracting pictures. Pictures and words differ in the
amount of information to be filtered out, to get the correct response.
The design of this experiment is a within subject experiment as the
number of choices to be made after viewing the stimulus on the screen are
same for everybody (2,3,4). Also the m ...
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Bacterial Resistance
Number of Words: 619 / Number of Pages: 3
... focused their attention on other problems plaguing the nation. Doctors prescribed antibiotics frequently, often when they were not even needed. According to a 1998 report by the Institute of Medicine, up to fifty percent of antibiotics are prescribed unnecessarily. This blatant overuse of antibiotics had a profound effect on the efficiency of the drugs in the future. The wonder drugs that had been so effective in treating an array of diseases had started to lose the battle against increasingly resistant bacteria, often referred to as superbugs.
The problem of is rooted in the overuse of many ant ...
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Genetically Altered Foods
Number of Words: 528 / Number of Pages: 2
... was done by a company known to be Swiss,
called "Ciba-Geiby". That which was debated dealt with the Advisory Committee
on Novel Foods and Processes (ACNFP) stating that "A gene resistant to the
antibiotic ampicillin used in an early stage of the developmental process, could
theoretically be passed to man via bacteria lodged in the gut of animals which
eat the maize unprocessed (559)". In response to this attack, the company said
that there would need to be a great amount of events that would have to take
place. The transferring of DNA to the bacteria is just one of which was
addressed. Ther ...
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Protein Synthesis
Number of Words: 336 / Number of Pages: 2
... are called anti-codons. Each tRNA molecule attracts different amino acids, of which there are around twenty, and they "stick" to the tRNA and depending on which tRNA molecule it is it wil attract a diferent amino-acid.On the RNA every three bases are called codons these are complementary to the anti-codons of the tRNA. For instance a codon of - GAA - would pair with the anti-codon- CUU -. In this fashion weak hydrogen bonds form between the tRNA and RNA molecules. This occurs at the ribosome. The ribosome is a organelle in the cytoplasm or on the rough endoplasmic reticulum it moves the unit of RNA ...
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How To Build A Pond
Number of Words: 314 / Number of Pages: 2
... overhanging the water's edge, and plants with long thin, grassy foliage that grows in the shallows. These will all help to cover the water edge, which is almost never seen in a natural pond. Most nurseries sell aquatic plants. A pond that is meant to look natural requires much less maintenance than a formal pool, were clean, clear water is generally preferred. If the site has a low area, a pond is a good choice in almost any climate. Natural ponds will also suit almost any architecture, but they are not often effective on small site, particularly urban houses were a more formal water feature would l ...
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Remotely Operated Vehicles
Number of Words: 278 / Number of Pages: 2
... system and some usually have an on board camera. ROV's have been
used for the last thirty years. They have been doing tasks that divers can't, do
to Economical and safety reasons.
A Submersible is a piece of machinery designed to do an underwater function.
Submersible's and rov's are important to Marine biologists so they can study
underwater creatures. Geologists can use them to find out more about the
evolution of the Earth by studying the ocean floor. The ocean holds some
minerals that are becoming scarce on the Earth's surface. If we can set up
mining stations under the water it ...
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Afluenza
Number of Words: 1783 / Number of Pages: 7
... year, (Shop 'til We Drop [STWD], 1997). These are two vivid examples of the amazing rate at which affluenza is growing. These numbers are occurring
Causes & Cures
despite the strong economy and perhaps because of it. With the economy in the U.S. going so well credit card companies are issuing more credit. Consumers are then using their new found credit to buy without even thinking of how they will pay for the products. They get the credit cards because of the appealingly low 5.9% introductory rate and go for it, but the credit card companies usually run those rates up to 18% or more in the fi ...
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The Choosing Of A Landfill Site
Number of Words: 2869 / Number of Pages: 11
... is deposited - and joint-disposal - where municipal and hazardous
wastes may be co-deposited in order to gain benefit from municipal waste
decomposition processes. The landfilling of hazardous wastes is a contentious
issue and one on which there is not international consensus.
Further complications arise from the difficulty of classifying wastes accurately,
particularly the distinction between 'hazardous'/'non-hazardous' and of ensuring
that 'inert' wastes are genuinely inert. In practice, many wastes described as
'inert' undergo degradation reactions similar to those of municipal solid waste ...
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The Physics Of A Crystal
Number of Words: 331 / Number of Pages: 2
... of the same element. For Example, oxygen has two allotropes, normal oxygen and ozone. Pure carbon also has two allotropes, diamond and graphite. A crystal of diamond is in fact a single giant molecule in which every carbon atom is linked to four other, by four equal, strong bonds. These bonds are arranged tetrahedrally round each atom and there are no planes along which the giant molecule can easily be split. This quality is what gives diamond its tremendous hardness.
Graphite on the other hand, consists of flat sheets of carbon atoms arranged in adjoining rings. Each carbon atom is linked to three ...
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