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» Browse Science and Environment Term Papers
Acid Rain 3
Number of Words: 723 / Number of Pages: 3
... or fog.
This effects the lakes by changing the pH balance. As the water pH approaches 6, crustaceans, insects, and plankton begin to disappear. When the pH is slightly above 5, major changes start to happen, less desirable species of mosses and plankton may begin to flourish, whereas others will lessen in numbers and die off. Below pH of 5, the water is to acidic for many fish, the bottom is covered with undecayed material, and the shores may be dominated by mosses.
Animals also are affected. Some ducks, for example, depend on fish and other organisms for nourishment and nutrients. As these food ...
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Static Electricity
Number of Words: 1062 / Number of Pages: 4
... the force
of attraction or repulsion decreases.
All matter is made up of very tiny particles called atoms. Atoms
are made up of even smaller substances called subatomic particles.
Scientific studies have found that some of these subatomic particles are
charged with electricity. The electric charges are made up of two kinds -
positive and negative. The positively charged particles are called protons,
and the particles with negative charges are called electrons. In an atom,
the protons are located in the center, or nucleus, and the electrons
revolve in a series of orbits around the nucleus. All e ...
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Dams And Resources
Number of Words: 1199 / Number of Pages: 5
... nation's land area. In the
United States, whose 5,500 large dams make it the second most dammed country in the world, we have
stopped building large dams, and are now spending great amounts of money trying to fix the problems
created by existing dams.
Although the impacts of large dams have been well documented for some time now, in case after
case, new ones are proposed whose environmental impacts are downplayed or even ignored. A suvey
showed that most dams were built without the consideration of downstream effects, even when these
impacts could be predicted to cause massive coastal erosion ...
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Grasshopper Dissection
Number of Words: 357 / Number of Pages: 2
... right instead of just screwing off and not concentrating at all. I never knew that a grasshopper had so many complex parts to it. The jaw alone amazed me. I must say that the temperature in the room made those little things stink like a son of a gun. But all in all it was fun and I can honestly say that I actually learned something this year.
In conclusion I would just like to state that this project has been a blast, I don’t even mind writing these little papers because it is fun. I'm not just saying this to suck up but I do enjoy Biology not just because I love nature but because ...
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Platinum
Number of Words: 640 / Number of Pages: 3
... such
as iridium, osmium, palladium, rhodium, and ruthenium. The grains also
contain small amounts of iron, copper, chromium, and titanium. A large
nugget of platinum will be found only on occasion, like in 1843, a lump
weighing over 21 pounds was found in Russia. Russia produces the worlds
largest share of platinum-group metals. Other important sources of
platinum are located in the Transvaal province in South Africa and in
Sudbury, Ont. Colombia and the United States also have sources of platinum.
The United States uses about 475,000 troy ounces of platinum a year. About
1/5 of this comes fro ...
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Migraines
Number of Words: 711 / Number of Pages: 3
... receptor docking, and/or re-uptake) of serotonin, that disrupts the normal functioning of the nervous system and can lead to various symptoms associated with migraine.
The severe pain associated with migraine occurs when the mechanism that normally inhibits and/or mediates pain is disabled. There is no actual tissue damage occuring during a migraine attack. Instead, the pain results from a deranged neurochemistry. Migraine pain is like a loud fire alarm bell ringing when there is no fire. Scientists suspect that a caffeine withdrawal could be the possible cause of common . Why? Well, caffeine is a po ...
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Black Holes
Number of Words: 3099 / Number of Pages: 12
... the visible
universe?
The black hole's surface is known as the event horizon. Behind this
horizon, the inward pull of gravity is overwhelming and no information about the
black hole's interior can escape to the outer universe. Applying the Einstein
Field Equations to collapsing stars, Kurt Schwarzschild discovered the critical
radius for a given mass at which matter would collapse into an infinitely dense
state known as a singularity.
At the center of the black hole lies the singularity, where matter is
crushed to infinite density, the pull of gravity is infinitely strong, and
space-time has inf ...
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The Mars Alive Documentary
Number of Words: 470 / Number of Pages: 2
... many believe an American flag
should be placed on the planet of Mars.
The Americans have greatly contributed to the findings on Mars;
they have helped figure out that the temperature is cool and that the
atmosphere is thin. America’s NASA deeply desires for Mars to be a useful
planet. Many take-offs have been launched in recent years to carry out
this goal. Mar’s Direct is one plan where a rocket to Mars was to exploit
the local resources on the planet. Usually, rockets such as this one, need
fuel and oxidizer in order to power-rocket. Once the rocket has taken off,
the many discoveries take pl ...
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Nobelium
Number of Words: 163 / Number of Pages: 1
... inventor and philanthropist.
Nobelium can be found when produced artificially in a laboratory.
Discovery of the element was first claimed in 1957 by scientific groups in the
United States, Great Britain, and Sweden, but the first confirmed discovery of a
nobelium isotope was by a team of scientists at the Lawrence Radiation
Laboratory in Berkeley, California and that took place in 1958. The isotope was
created by bombarding curium isotopes with carbon ions.
Chemically, the properties of nobelium are unknown, but because it is an
actinide, its properties should resemble those of the rare earth ele ...
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Evolution
Number of Words: 9024 / Number of Pages: 33
... 43
VALUE/LIMITATIONS: THE THEORY OF BIOLOGICAL EVOLUTION .... 45
ALTERNATE EXPLANATIONS OF BEING ........................... 47
CONCLUSIONS ............................................... 48
INTRODUCTION
Theories explaining biological evolution have been bandied about since
the ancient Greeks, but it was not until the Enlightment of the 18th
century that widespread acceptance and development of this theory emerged.
In the mid 19th century english naturalist Charles Darwin - who has been
called the "father of evolution" - conceived of the most comprehens ...
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