Keeping The Snake River Dams
.... List. According to a Protecting the Environment ’99 article “A look at the impacts of removing dams” by Chris Fowler, it states, “The listing triggered a series of events which have led the Army Corps of Engineers to consider the removal of four dams on the Lower Snake River.” There is no disputing the fact that the number of native salmon swimming in the rivers and streams of the Pacific Northwest are dangerously low levels. Most experts believe native salmon will be gone in 25 years. The endangered salmo .....
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The Solar System
.... rotates in its axis once a day. The earth is a sphere shaped object. Its diameter is 12,750 km (7,923miles). It takes 23 hours and 56 minutes to rotate once, which is approximately one day. The sun orbits the sun ever 365.25 days. The average surface temperature is 15 degrees. The distance from the sun is 150million km (93 million miles). The sun is 150million km (93 million miles) away from earth. It is 1.4million km (864,000 miles) in diameter. Its surface temperature is 5,800 degrees Celsius (10 .....
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Salt Water Can Support An Electrical Current
.... above a certain amount will not dissolve, the solution is called saturated. For most substances, solubility increases with increasing temperature of the solvent. In general, molecules that are structurally similar to the molecules of the solvent have the highest solubility. When a solute is added to a solvent, several physical properties of the solvent change. Its boiling point rises and its freezing point lowers with increasing concentrations of solute.
Solutions are similar to other types of mixture .....
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Toxic Waste
.... developing countries on the malaria-carrying mosquito. Oil spills also have harmful effects, luckily chemicals can neutralize the oil before massive damage occurs. In 1983 the Dow Chemical Company’s factory, a major producer of chemicals, showed contamination from dioxin. Dow undertook a 3 million dollar study of the material. The company announced that Dioxin is less health and life threatening.
High-temperatures are used to reduce the toxicity of waste. These processes use plasma technology to make .....
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Science Experiment On Odor Changes Of Various Chemicals
.... specific contributions to the experiment. The chemicals included vinegar, ethyl alcohol, sulfuric acid, salicylic acid, and methyl alcohol.
RESEARCH OF THE PROBLEM
To start my project, I researched vinegar. Vinegar is a sour liquid with a pungent odor, containing acetic acid, and is made by fermenting dilute alcoholic liquids such as cider, wine, or other fruit juice. Vinegar is used as a condiment, preservative, and in certain medicines (2: 1214).
Ethyl Alcohol is also used in medicines. The form .....
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The Leaf-Cutting Ants
.... pest, this insect on occasion may invade the home for cereals. In the United States, the Texas leaf-cutting ant, Atta texana , occurs in Texas and Louisiana. This ant is believed to cause a total yearly loss of $5 million in the United States (unison services. 1998).
There are about 9,500 named species of ants. These ants are divided into 16 sub families and 300 genera, all which belong to the family called Formicidae, the family of ants (Hoyt. 1996). The leaf cutting ant belongs to the genus .....
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Environmental Issues Associated With Vehicle Use
.... Increasing levels of air pollution, particularly particulates from vehicles, are linked to increasing respiratory problems including asthma and this air pollution is thought to cause up to several thousand deaths and up to 20,000 hospital admissions every year.
Acid rain is another serious problem, helped along with the increased usage of motor cars. The increased acidity of the precipitation is down to contamination by carbon dioxide, sulphur dioxide and nitrogen oxide, all of which the car is larg .....
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The Mars Alive Documentary
.... Unfortunately, the country does not have the funds to
carry out their survival plans. Lastly, 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 .....
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Saturn
.... corresponding extensive atmospheres.
Current models of the interior indicate that below the relatively thin
opaque cloud layer is an extensive, clear hydrogen-helium atmosphere. Data
on the internal heat flux, the detailed gravity field, and the observed
upper-atmosphere hydrogen-helium ratio satisfy a model of the interior
where the ratio of hydrogen to helium decreases with depth. The gas
density gradually increases downward and the gas transforms into a liquid.
Further down the pressures increase to a .....
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What Is Electricity
.... long enough without touching anything, you would
build up so many electrons that your finger would explode! But this is
nothing to worry about... unless you have carpeting. Although we modern
persons tend to take our electric lights, radios, mixers, etc. for
granted. Hundreds of years ago people did not have any of these things,
which is just as well because there was no place to plug them in. Then
along came the first Electrical Pioneer, Benjamin Franklin, who flew a kite
in a lightning storm and re .....
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The Wolf
.... grown with small paws. The wolf would move around by
walking, running, or in a big pack with it’s family. The pack can have as
much as 36 wolves. Each pack always has two head leaders, one male and the
other female. The pack may hunt and go as far as 130 to 13,000 sq. km.(50
to5,000 sq. miles)—and will defend all that land from intruders. The wolf
would have soft fur over it body to cover it like a jacket to keep it warm
during the winter. The wolf’s eyes are very keen. It can see and hear
very well w .....
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Oil And Protecting The Environment
.... technologies, the industry has made tremendous progress in
preventing spills over the past decade.
In 1997, the latest year that Coast Guard statistics are complete, the
volume of oil spilled in U.S. waters declined by two-thirds compared to
the year before, representing the lowest amount recorded since the Coast
Guard began publishing data in 1973. And more than three-fourths of those
spills were under 10 gallons -- less than a car's fuel tank holds.
Even as the industry strives to reduce the number .....
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Plan And Purpose (Creation) Or Time And Chance (Evolution)?
.... You can say that both creation and evolution are biased in their
approach because those that believe in creation (creationists) posses a
strong, firm, uncompromising sense of their beliefs and doctrines, and
those that believe in evolution (evolutionists) posses an incompressible
view of their beliefs. Creationists firmly believe that their tentative
assumptions and ideology on how the universe was formed and how life began
is legitimate, exact, and accurate in all aspects. Evolutionists, however .....
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The Big Bang And Steady State Models
.... have observed.
The Steady State model says that the universe does not evolve or
change in time. There was no beginning in the past, nor will there be
change in the future. This model assumes the perfect cosmological
principle. This principle says that the universe is the same everywhere on
the large scale, at all times.2 It maintains the same average density of
matter forever.
There are observational evidences found that can prove the Big Bang
model is more reasonable than the Steady State mo .....
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Freezing Point
.... or melting continues once it
has commenced.
All solids melt when heated to their melting points, but most liquids can
remain liquid even though cooled below their freezing points. A liquid may
remain in this supercooled state for some time. This phenomenon is
explained by molecular theory, which conceives the molecules of a solid as
being well ordered and the molecules of a liquid as being disordered. To
solidify, a liquid must have a nucleus (a point of molecular orderliness)
around which the disordere .....
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