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» Science Essays and Papers
The Wolverine
<view this essay>.... ranges from northern Europe and Siberia through northern
North America. Their distribution once extended as far south as Colorado,
Indiana, Pennsylvania, and perhaps Michigan.
It looks like a weasel maybe because it is in the weasel family.It has
black and brown fur and long claws.It’s legs are short but strong. The Wolverine
is usually solitary except for members of the opposite sex and a female's young.
After the females give birth they hide with their young. The mother defends her
territory and intruders are not tolerated. This territorial behavior continues
until the young are ready to hunt on their own.
The Wolverine has a diet that can include anythi .....
Number of words: 289 | Number of pages: 2 |
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Cellular Respiration
<view this essay>.... phosphates to form a total of 4 ATP, and pyruvic acid molecules are formed. A net gain of 2 ATP have been formed. As the pyruvic acid molecules make their way toward the mitochondria, two more molecules of NADH are formed. A carbon atom also breaks off and combines with two oxygen atoms to produce the waste product carbon dioxide. As a result of these reactions, each pyruvic acid molecule is transformed into a two-carbon compound called an acetyl group. The two acetyl groups combine with a molecule of coenzyme A each to form two acetyl coenzyme A molecules. These molecules are processed in a complex pathway called the Krebs cycle. As the Krebs cycle pr .....
Number of words: 366 | Number of pages: 2 |
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Forests Cannot Absorb CO2 Emissions
<view this essay>.... are at risk from slow climate
changes of the planet. These slow climate changes are caused mostly
because of CO2 emissions. Experts now are trying to find new ways to cut
back on CO2 emissions and not relying that much on forests around the world.
A climate change not only threatens to destroy forests, but as these
forests die back they will trigger the release of vast quantities of carbon
dioxide stored in vegetation and forest soils. This will add further to
the climate change problem. Experts hope that this new way to cut back on
these CO2 emissions will not be costly and time consuming.
Dry air is made up of about 78 percent nitrogen and 21 percent .....
Number of words: 329 | Number of pages: 2 |
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Atm Network
<view this essay>.... as circuit switching. The invention of the vacuum tube led to the introduction of frequency division multiplexing (FDM) in 1925, and therefore the ability to make multiple connections on a single line. The public switched telephone networks (PSTNs) expanded, but with the circuit switched transfer mode remaining in use. This is because it provided an obvious way of keeping the constant connection necessary for voice traffic.
The invention of the transistor and the concept of pulse code modulation (PCM) allowed digital communications to be developed in the late 1960's. The interconnection of computer systems over telecommunication networks soon became a requirem .....
Number of words: 2013 | Number of pages: 8 |
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Global Warming
<view this essay>.... position is based on the idea that is real and that it is caused by human activity. Further, it presupposes that the potential damage caused by would greatly outweigh the damage caused to the economy by severely restricting energy use. Finally, his position assumes that the agreement will significantly reduce greenhouse gas emissions worldwide and will prevent .
Science
Is occurring?
- According to Accu-Weather, the world's leading commercial forecaster, "Global air temperatures as measured by land-based weather stations show an increase of about 0.45 degrees Celsius over the past century. This may be no more than normal climatic variation...and severa .....
Number of words: 699 | Number of pages: 3 |
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Cystic Fibrosis
<view this essay>.... more than 25,000 Americans and causes more than 500 deaths every year. Forty years ago the average life span of a patient was five years .Today improved medical therapies and nurtrient rich diets have enabled suffers to survive into adulthood. Research into the cause of reads like a detective story. One clue is that patients have excess amounts of sodium and chloride in their sweat making it vey salty . At the University of North Carolina researchers found that salt imbalance caues thick mucus to accumulate in the patients lungd. High level of salt in lung cells draw water out of the mucus causing it to thicken.The level of salt in a cell is determain .....
Number of words: 383 | Number of pages: 2 |
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Role Of Government Intervention In Environmental Issues
<view this essay>.... I have chosen to examine the article from the New York Times entitled
RU.S. Seeking Options of Pollution RulesS. Although pollution is detrimental to
our environment, you have to take into account that it is almost impossible to
entirely prevent pollution. This is scientifically impossible and it would have
severely negative economic impact on the industries. So the core issue becomes
the fact no matter what, there will always be pollution, as long as these
industries exist. So we should focus on how we can minimize this and yet at the
same time have an efficient market system? Furthermore, we should also focus on
how we can accomplish this .....
Number of words: 824 | Number of pages: 3 |
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An Investigation Into Electrical Resistance
<view this essay>.... which is a poor conductor of electricity, is one of degree rather than kind, because all substances conduct electricity to some extent. A good conductor of electricity, such as silver or copper, may have a conductivity billions of times as great, or more, as the conductivity of a good insulator, such as glass or mica.
Method
We were set the task of investigating the factors that come into play when determining the resistance of a piece of wire. We would be provided with the necessary apparatus needed to carry out the investigations. The basic setup would involve a circuit with a set of cells connected in series with an ammeter and the piece of wire being .....
Number of words: 1160 | Number of pages: 5 |
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