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» Browse Science and Environment Term Papers
Endangered Species 3
Number of Words: 2194 / Number of Pages: 8
... kinds of causes that drastically cut Down the number of these endangered species:
Direct Causes
Direct Causes is when the animals are purposely hunted, trapped, fished, whaled, or seled to extinction. Hunting for sport has been responsible for endangering such animals as the Polar Bear and the Siberian Tiger. But the endangerment of most species that are hunted or trapped today results mainly of commercial activities. Among the animals that have become endangered for commercial reasons are several species of whales, including the enormous Blue Whale; many of the spotted cats, such as the Cheetah; ...
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The Atomic Theory
Number of Words: 423 / Number of Pages: 2
... Thomson, another important person in the development of the atomic theory, was born in
1906. Thomson won the Nobel Prize in physics (1906) for his work in the conduction of electricty through gases.
He discovered the electron by using cathode rays. An electron is the smallest particle of an atom, the charge on
an electron is negative.
Ernest Rutherford, who was born in 1871 identified the three main components of radioactivity: alpha,
beta, and gamma particles. Radioactivity was discovered by a French scientist named Becquerel. Rutherford
was also the first one to disdcover the true st ...
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Kangaroos
Number of Words: 1056 / Number of Pages: 4
... 2 m tall; and weigh 90 kg. A gray kangaroo can clear more than 9 m (30 feet) at a bound and attain a speed of 48 kilometres per hour. The wallaroo, a smaller and stockier animal, may be dark gray to pinkish brown; it lives in rocky country throughout Australia except Victoria. These large kangaroos travel in groups (mobs) under the leadership of the largest male ("old man," or "boomer"), which dominates younger rivals by biting, kicking, and boxing.
Each long, narrow hind foot has four toes. The short forelimbs are used almost like human arms, but the thumb is not opposable. Kangaroos p ...
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The Atomic Bomb
Number of Words: 543 / Number of Pages: 2
... nuclear fission. That goal was to
be completed in 1945 after the U.S.A. spent over 6.7 Billion Dollars on the test
bomb named the "Trinity". I t was dropped on Alagormado in Texas on July 16th
1945.
When Albert Einstein heard about the "Trinity" he called the president directly
and asked for a halt on all atomic bomb projects for he did not want to hurt
anyone with his discovery. But when spies reported the Germans working on such a
project the Manhatten project was continued.
The long nights there after were hell for the president while deciding to launch
the soon to be completed "Little Boy" bomb. ...
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Mistakes People Make With Steroids
Number of Words: 1176 / Number of Pages: 5
... Who wouldn’t want that? Think about all the pain you wouldn’t have to go through doing all those reps. With a performance enhancing drug, you could do even less, get the same results and even better.
Today more than ever, performance enhancing drugs and supplements are being abused. It is estimated that 99% of all professional bodybuilders are using steroids, or some type of performance enhancing drug. Many people are drawn to these “bulking up drugs” simply because of the work factor involved, and the time needed to “bulk up”. This feature especiall ...
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Doublespeak: Nuclear Power Plants
Number of Words: 504 / Number of Pages: 2
... This use of doublespeak is misleading to
the public and may make them believe that a major accident hasn't happened, or
the accident was a normal event or minor incident.
In 1979 a valve in the Three Mile Island stuck open, allowing coolant,
an important part of the plant, to escape from the reactor. An installed
emergency system did its job and supplied the reactor with necessary coolant,
but the system was shot off for a few hours due to employee error. Corrective
action was eventually taken, and only a partial meltdown occurred. The plant's
containment building was able to hold most of t ...
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Aids 2
Number of Words: 744 / Number of Pages: 3
... person to person, according many factors but mostly to the overall health of the individual. The new advances in technology are helping postpone the advancement of the disease.
Lets start at the beginning. First, lets learn what AIDS is. AIDS is an acquired defect in your immune system. The passing of any bodily fluids could technically be used as a passage way for the virus. Once infected with HIV it will begin to attack your CD4+cells, commonly known as your t-cells or t-helpers and they will begin to drop in numbers. You measure the damage to your immune system by HIV and your ability to fig ...
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No Representation Of Allocentric Space Has Been Found In The
Number of Words: 1785 / Number of Pages: 7
... has been shown to be the case with rats in a maze situation (O'Keefe, 1983). Indeed, this situation does not require the rat to have a concept of absolute space; it may depend on associations between cues and responses which are provided by the maze structure itself. However, O'Keefe & Nadel (1978) identified spatial behaviours which they argued would require the existence of an allocentric map: detection of changes within the environment; navigation to the goal from a different starting location; and perhaps most importantly detour behaviour, which required the adaptation of novel behaviour to find ...
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El Nino
Number of Words: 380 / Number of Pages: 2
... of nutrient rich therocline water reduces the growth
of algae, which in trun, collapses the food chain. Thus, leaving our
worlds subsistence and commercial fishermen with out food and money.
With the already descendeing food chain on our earth, the warming water
also effects the atmosphere, resulting in more extreme temperatures, more
rain, and more drought periods, costing more money to our already debted
economy, and the world.
An example (demonstrated here by alaska) brought about by the extreme
temperatures was during the 1976-77 el nino, which brought severe cold to
the polar regions. The ...
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Biological And Chemical Weapons
Number of Words: 1582 / Number of Pages: 6
... weapons by Iraq and Libya in 1988 reinforces the danger that these weapons will spread (Cass 1996).
Not only are these weapons cheap, but they are very effective. Defense Secretary William S. Cohen held up a five-pound bag of sugar on national television last month to show how, with an equivalent amount of anthrax, Iraq could eliminate at least half the population of Washington. The US Law Enforcement Assistance Administration reported in March 1977 that a single ounce of anthrax introduced into the air-conditioning system of a domed stadium could infect 70-80,000 spectators within an hour (H ...
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