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Papers on Science and Nature
Limonene And Its Uses
Number of words: 1780 | Number of pages: 7.... in the RED document for
reregistration case 3083, limonene.
Use Profile
Limonene is a naturally occurring chemical which is used in many
food products, soaps and perfumes for its lemon-like flavor and odor.
Limonene also is a registered active ingredient in 15 pesticide products
used as insecticides, insect repellents, and dog and cat repellents.
Pesticide products containing limonene are used for flea and tick
control on pets, as an insecticide spray, an outdoor dog and cat repellent,
a fly repellent tablecloth, a mosquito larvicide, and an insect repellent
for use on humans. Formulations include ready-to-use .....
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Tim O'Brien's The Things They Carried Eating Them Away
Number of words: 554 | Number of pages: 3.... the parasite is not solely in his return Vietnam,
but rather a constant personal preoccupation that seems to flow through
the collection of stories. O'Brien shows how the memories of the war take
on a parasitic form, and uses himself as an example.
In the chapter ³Speaking of Courage², O'Brien introduces a character by
the name of Norman Bowker. In the story Norman finds him self home after
serving his time in Vietnam. Even though he is back in his home town,
things do not seem the same to him. The was seems to have put a new spin
on his life. Most of the story he spends driving in circles while thinking
about the war and his l .....
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Geography Reading Project (timeline)
Number of words: 1145 | Number of pages: 5.... go back they’re reappearing in front of some knight’s scares them so there two guides are killed and they are left alone in the 14th century trying to find the professor. While they are in the 14th century they prove true some of their hypothesis of what they thought that the area looked like. They go though all sorts of trouble but eventually bring the professor back and all is well. The whole story is set in Scotland and is set in the present and the past I will be describing
the geographical features of the past not the present. Scotland is north of the equator and the exact longitude and latitude is 8-2 degre .....
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Cells
Number of words: 333 | Number of pages: 2.... cell’s organelles to receive the material it needs or it will die. The eukaryotic cell does this by maximizing the surface area to volume ratio. By using the surface area and volume equations for a sphere you can estimate the surface area of a small cell. By modeling the growth rate of the surface area and volume of a sphere on a linear graph its easily discernible that as the size of the sphere increases the ratio of surface area to volume dramatically decreases until finally the volume of the sphere surpasses the surf ace area. Simply, by minimizing its size, a cell is maximizing the speed at which it can communicate, the rate .....
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Planting Flowers
Number of words: 2698 | Number of pages: 10.... (Loewer 6). Where did the non-native flowers come from and how did they get here? "Probably the largest number of plants accidentally introduced in this country arrived in ships' ballast. Because the early merchant ships that sailed from Europe were empty of goods on the trip over, their hulls were loaded with dirt so that they would float properly. When they arrived in America, the dirt was removed and left onshore. The seeds it contained then began to spread, bloom, produce more seed, and eventually spread" (6). Interesting enough, I have learned that another gift from the Europeans is the honeybee, which came to America .....
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Solar Cells
Number of words: 1165 | Number of pages: 5.... but in
insulators and semiconductors there is an "energy gap", in which no
electron orbits can exist, between the inner valence band and outer
conduction band [Book 1]. Valence electrons help to bind together the atoms
in a solid by orbiting 2 adjacent nucleii, while conduction electrons,
being less closely bound to the nucleii, are free to move in response to an
applied voltage or electric field. The fewer conduction electrons there are,
the higher the electrical resistivity of the material.
In semiconductors, the materials from which solar sells are made, the
energy gap Eg is fairly small. Because of this, electrons .....
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Marijuana 2
Number of words: 863 | Number of pages: 4.... effects while other varieties require many hits to achieve the same effects. Additionally, the amount that one individual likes to smoke can be many times what another prefers. Generally, 1/8 ounce (3.5 g) of mid-quality bud could get around 20-30 people reasonably high.
Cannabis is sold on the street for anywhere between $25 - $150 per 1/4 ounce depending on quality and location. In the U.S., prices are generally $30-$60 for 1/4 ounce of lower quality and $60-$120 for 1/4 ounce of high quality bud. Prices drop quickly as quantity goes up.
Both sales and possession of cannabis are illegal in the United States and most countries .....
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Meth Labs
Number of words: 2052 | Number of pages: 8.... in characteristics considerably, which complicates our understanding of rural substance use problems and increases the need for prevention, intervention, and treatment programs. For too long, the problems of alcohol and drug abuse in rural areas have received little attention from the federal level. As national studies show, those who live in rural areas are just as likely to have alcohol and other drug problems as those who live in large and small cities. The choice of addictive substances may differ, but the prevalence of abuse is virtually the same for country and city dweller alike.
Less attention has been focused on drug us .....
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Alzheimers Disease
Number of words: 1507 | Number of pages: 6.... we called senility. Some people develop this condition when they are as young as 40 years of age. However, the disease is most common in persons over the age of 65. It is estimated that approximately 10 percent of persons over 65 years of age may have Alzheimer’s disease and that in persons over the age of 85, up to 50 percent may be affected. Alzheimer’s disease is not a normal part of the aging process. It is not contagious, and it is not known how it can be prevented. While the physical changes in the brain are very similar among different people the behavioral and psychological symptoms that result are complex and .....
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How Humans And Fish Obtain Oxygen
Number of words: 779 | Number of pages: 3.... which then branch into many many microscopic tubs that cary the oxygen to every part of the lung till they meet the thin sacs called aveoli. Aveoli are thin sacs in the lungs that carry oxygen in and carbon dioxide out of the blood stream. They diffuse the oxygen into the blood cells that need it and in turn diffuse carbon dixoxide out. Diffusion is an easy method for the transfer of oxygen because it dosent take any energy and since the walls of the aveoli are only 1 cell thick it diffuses without any problems. After the oxygen is diffused into your blood it is then used for cellular respiration and many other things. But t .....
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