Papers on Science and Environment
Big Bang Theory
Words: 1285 - Pages: 5.... to expand, and the galaxies
have continued moving away from each other ever since. Today the universe
is still expanding, as astronomers 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 S .....
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CHEMICAL REACTIONS
Words: 874 - Pages: 4.... will take away from a substance's mass or that it had a negative mass, which weren't relevant to his original theories.
In the Eighteenth Century Antoine-Laurent Lavoisier, in France, discovered an important detail in the understanding of the chemical reaction combustion of oxygen. He said that combustion was a chemical reaction involving oxygen and another combustible substance, such as wood.
John Dalton, in the early Nineteenth Century, discovered the atom. It gave way to the idea that a chemical reaction was actually the rearrangement of groups of atoms called molecules. Dalton also said that the appearance and disappearance of pro .....
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Dyslexia
Words: 2476 - Pages: 10.... Focusing and behavior.
Misconceptions about dyslexia.
Seeking help through organizations.
What exactly is dyslexia? “The word dyslexia is derived from the Greek “dys” meaning poor or inadequate and “lexis” meaning language. Dyslexia is a learning disability characterized by problems in expressive or receptive, oral or written language”(Wilkins URL). Simply put, dyslexia means trouble with reading, writing, and spelling. Dyslexia is not stupidity, laziness, lack of interest, or anything to be ashamed of. Dyslexia is not a disease; it has no cure and it will not go away. It knows no age, gender, or class .....
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The Human Eye In Space
Words: 907 - Pages: 4.... exposed to the stimulus.
* Minimum separable: shortest distance by which two lines can be separated
and still be perceived as two lines.
"During the day, the earth has a predominantly bluish cast..... I could
detect individual houses and streets in the low humidity and cloudless
areas such as the Himalaya mountain area.... I saw a steam locomotive by
seeing the smoke first..... I also saw the wake of a boat on a large river
in the Burma-India area... and a bright orange light from the British oil
refinery to the south of the city (Perth,Australia.)"
The above observation was made by Gordon Cooper in Faith 7 [1963] and
which generated muc .....
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History Of The Cell Theory
Words: 326 - Pages: 2.... in Neuss and educated at the
universities of Bonn, Wurzburg, and Berlin, Schwann was involved in the study of
the structure of plant and animal tissues. Along with Matthias Jakob Schleiden
a German botanist, Schwann proposed the cell theory.
The cell theory has three parts:
1. All organisms are composed of cells.
2. Cells are the basic units of structure and function in organisms
3. All cells come from preexisting cells.
The impact on science was very great due to the discovery of cells and
the cell theory. Many or all things were effected by the discovery of cells,
everything was looked upon in a different way. Some peo .....
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Inventions And Their Importance
Words: 1810 - Pages: 7.... many reasons. Some hope to make money, others invent to make life more convenient, and some even invent to satisfy their curiosity of their urge to create (7,364/5), but satisfying economic needs, was one of the main reasons for invention. The economic inventions needed were devices, machines, business, and industry-processes and products. The majority of economic inventions collaborate with one another; a lot of things were invented to make other inventions work.
Another major reason people invent is to satisfy military needs. During war times engineers, scientists, and inventors are brought together and their only duty is to invent m .....
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Ocean Environment
Words: 2944 - Pages: 11.... salinity, and temperature are very important concepts in the
study of oceanography. The salinity and temperature of the water influence its
density, and the differences in density are the major factor in understanding
the formation of currents and the positions of water masses in the sea. In
addition, temperature and salinity play major roles in influencing the
distribution of plants and animals.
The sediments of the sea floor may be divided into lithogenous,
hydrogenous, biogenous, and cosmogenous sediments. Lithogenous sediments are
the major sediments on the ocean floor. They are derived from the chemical and
mechanical weathering .....
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Mexican Grey Wolf
Words: 1467 - Pages: 6.... in humans or have been contradicted by other work. This section will address each of these reported negative side-effects. Various studies have claimed that cannabis destroys brain cells. However, several other studies found no structural or neurochemical atrophy in the brain at all. Furthermore, it should be noted that Heath's work was sharply criticized for avoiding safeguards of bias and reporting "changes" that occur normally in the mammalian brain. Wu et al. found a correlation between cannabis use and low sperm counts in human males. This is misleading because a decrease in sperm count has not been shown to have a negative eff .....
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Cable Vs. V.90 Modems
Words: 1217 - Pages: 5.... IP traffic, can be seamlessly delivered over the cable modem platform to end-users.
. Since cable modem technology is very recent the conflict exists between different standards. The only specification that has been approved by ITU (in 1998) is DOCSIS (Data Over Cable Service Interface Specifications) which was developed by MCNS, CabeLabs, Arthur D. Little and consortium of North American MCOs. Later that year CableLabs established certification program that would ensure interoperability among the equipment from different vendors. Certified cable modems are expected to appear in second quarter of 1999.
While waiting for the certificat .....
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"An Ecosystem's Disturbance By A Pollutant
Words: 2974 - Pages: 11.... of the pollutant
administered over what period of time greatly affects the impact that the
pollutant will have on an ecosystem and population.
Pollutants can affect both a population and an ecosystem. A pollutant on a
population level can be either non-target or target. Target effects are those
that can kill off the entire population. Non-target effects are those that
effects a significant number of individuals and spreads over to other
individuals, such is the case when crop dusters spread herbicides, insecticides.
Next we look at population damage by a pollutant, which in turn has a
detrimental effect on the ecosystem in several ways. Fir .....
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