Papers on Science and Environment
Keeping The Snake River Dams
Words: 413 - Pages: 2.... of the purposed solutions.
As I have stated before in 1992 there was a changing event when four species of salmon were placed on the Endangered Species 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 .....
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Formation Of Protocells
Words: 797 - Pages: 3.... Energy wise, the Earth had plenty from a variey of sources Radiation: from the cosmic and radioactive isotope decays UV light: there were no protective ozone layer and thus immense heat. Electrical discharge from the never ending lightning caused chemical reactions to occur very often and there was also another source of heat from the young earth crust which was volcanically active.
For most chemical reactions to take place, a spark of electricity is needed, and this was provided by the lightning in the atmosphere. Amino acids basically consist of hydrogen, nitrogen, oxygen and carbon. Due to all of the lightning chemical react .....
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Two Inventions That Changed European History
Words: 475 - Pages: 2.... villagers were organizing their land into a two field system of agriculture. This system utilized one large field divided in half, one half of a field with crops and left the other half of a field was left unplanted for a year so as not to exhaust the soil. This system led to problems, because dividing the land in half led to shortages in the production of food because only half of the field was being used. This system of agriculture needed some minor adjustments to increase the production of food without destroying the soil in the process. This new system came about around the year 800. Farmers began to use a new system, the three-field s .....
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The Formation Of Rocky Shores
Words: 774 - Pages: 3.... had become the new coastline. Other shores had developed from geological events but in a different way. The rocky coast of Hawaii was formed by successive flows of lava into the sea which have not had time to collect sediment.
Life on the rocky shores is separated into distinct zones that reflect the length of time each is exposed. At the highest point on the rocks is the black zone, marked by blue-green algae. This transition area between land and the marine environment is flooded only during the high spring tides. The algae, enclosed in gelatinous sheaths to resist drying, are grazed on by periwinkles, which are protected under .....
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Finding Mass Using The Inertial Balance
Words: 575 - Pages: 3.... completing the experiment, we will be able to find the mass of objects using an inertial balance and compare them to accepted measures.
Materials: C-clamps, inertial scale, a watch with a second hand, and a triple beam balance.
Procedure: 1) The class will measure the period of oscillation of their balance pans when they are empty. The accepted period will be the average of the class. To find the period, you will measure the amount of time it takes for your balance to complete 20 oscillations. The period (T) will be computed by taking your time and dividing it by 20. This will be recorded as T2.
2) You will then measure the mass o .....
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A Brief History Of Clocks: From Thales To Ptolemy
Words: 4266 - Pages: 16.... the development of stereography by Hipparchos in 150 BC. radically altered physical representations of the heavens. By integrating stereography with the Clepsydra and the celestial sphere, humanity was capable of creating more practical and accurate devices for measuring time—the anaphoric clock and the astrolabe. Although Ptolemy was familiar with both the anaphoric clock and the astrolabe, I believe that the development of the anaphoric clock preceded the development of the astrolabe.
The earliest example, in western culture, of a celestial sphere is attributed to the presocratic philosopher Thales. Unfortunately, little is known about .....
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Acid Rain
Words: 766 - Pages: 3.... of nitrous oxides. These two chemical compounds combine with the water in the atmosphere to form what is known as . The negative effects has on the environment is the main reason legislation of industrial emissions from governments has been prompted.
is harmful to the environment because of its low pH. It can harm the biotic components of earth, and also the abiotic components. It's high acidity degrades soil to the point where it cannot support any type of plant life. Trees in forests are killed over long-term exposure. When these trees are killed, an imbalance in the hydrologic cycle can occur. Without living trees to consume the pre .....
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Chimpanzee
Words: 2281 - Pages: 9.... consume mammals.(Riss, 1990:167) Cannibalism has also been recorded both
in the Budongo Forest, Mahale Mountains and the Gombe National Park.
In Jane Goodall's, May 1979 article in the National Geographic called "Life
and Death at Gombe" it reveals the first time that chimpanzees who were always
perceived to be playful, gentle monkeys, could suddenly become dangerous killers.
"I knew that some of our chimpanzees, so gentle for the most part, could on
occasion become savage killers, ruthless cannibals, and that they had their own
form of primitive warfare."(Goodall, 1979:594) To try and explain this ruthless
behavior it is ne .....
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Nuke Waste
Words: 1827 - Pages: 7.... but since several years new
ways of disposing and storing these wastes have been
developed so they may no longer be harmful. A very
advantageous way of storing radioactive wastes is by a
process called 'vitrification'.
Vitrification is a semi-continuous process that
enables the following operations to be carried out with the
same equipment: evaporation of the waste solution mixed with
the
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1) borosilicate: any of several salts derived from both
boric acid and silicic acid and found in certain minerals
such as tourmaline.
additives necesary for the productio .....
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Cable Modems Are The Wave Of The Future
Words: 365 - Pages: 2.... in terms of price and value. Cox Communication Internet service is called @Home.
The following is a current price list and is also available at www.coxrevolution.com.
One important feature of Cox@Home is definitely the speed. Accessing the Internet is up to 100 times faster than a 28.8 modem because of the high bandwidth that is available through coaxial cable lines. A 28.8 modem can transmit data at a rate of 28,800 bits per second. Cox@Home cable modems can transmit data at 1,500,000 - 3,000,000 bits per second saving the user valuable time and unneeded boredom.
Some factors that are beyond the control of the @Home Network can aff .....
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