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» Browse Science and Environment Term Papers
Fungi: The Great Decomposers
Number of Words: 180 / Number of Pages: 1
... of plants
and animals.
History
the history of fungi is not very clear because scientists have never
realy wnt in great deepth , because fungi are not needed commericaly. the
ancestors of fungi lived in shallow bodies of water about 600-800 million years
ago. Some of the things the fungi had to encounter from living out of water was,
there was more sunlight that was normally blocked be the water, and the had to
do something about the rapid shifts in tempature and seasonal shifts.
Fungi are different from other plants in many ways. The general
characteristics of fungi are extracellalar digestio ...
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Transitions Of Reptiles To Mammals
Number of Words: 2757 / Number of Pages: 11
... major structural change, and the fossils occur roughly (but often not
exactly) in the expected order. However, usually there are still gaps between
each of the groups. Sometimes the individual specimens are not thought to be
directly ancestral to the next-youngest fossils (e.g. they may be "cousins"" or
"uncles" rather than "parents"). However they are assumed to be closely related
to the actual ancestor, since the have similar intermediate characteristics.
Where Does It All Begin ?
Mammals were derived during the Triassic Period ((from 245 to 208
million years ago) It began with relatively warm an ...
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Evaluating An Enthalpy Change That Cannot Be Measured Directly.
Number of Words: 627 / Number of Pages: 3
... temperature was taken and recorded using the thermometer.
The pre-weighted sodium hydrogencarbonate was then added to the solution, and
the final temperature was recorded.
The contents of the cup were then emptied out and the cup was washed out with
water and then thoroughly dried. This was done three times for the sodium
hydrogen carbonate so that I could remove any anomalies that were obtained.
The experiment was then repeated in exactly the same manner except sodium
carbonate was used instead of sodium hydrogen carbonate.
The results were then tabulated, this table is shown below.
Results Table. ...
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The Giant Anteater
Number of Words: 346 / Number of Pages: 2
... the
sides to protect its claws, which the animal uses to rip open ant nest
before eating. Then it flits its long tongue and literally licks up the
ants. The anteater precedes to rip oben a termite or ant hill with its
clawed hand and work its tubular snout down into the heart of the colony,
trapping the insects on its tongue's sticky coating (Encarta ‘98). The
anteater also uses the claws as a defense mechinism. The natural predators
of the giant anteater are the jaguar and the puma. Anteaters defend
themselves against the large cats by using their front four-inch-long claws.
The puma and jaguar ...
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Radon
Number of Words: 2138 / Number of Pages: 8
... (The America Heritage Dictionary of the English
Language, Third Edition, 1992). A radioisotope is a naturally or
artificially created isotope having an unstable nucleus that decays,
letting off alpha, beta, gamma rays until stability is reached (The America
Heritage Dictionary of the English Language, Third Edition, 1992). Radon's
melting point is -71°C. The boiling point is -61.8°C. Radon is the densest
gas known (Concise Columbia Encyclopedia, 1995).
Radon is a heavy, colorless, odorless, tasteless, non-flammable gas
(therefore it cannot be detected with the human senses) produced by the
radio ...
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Problems Caused By Air Pollution
Number of Words: 1016 / Number of Pages: 4
... from the usually severe pollution, 58 deaths (Edelson 26). Not only
in the United States are health problems caused by air pollution showing up, but
they are also showing up in other parts of the world, like Europe. In 1930, in
Belgium's Meuse River valley, a major industrial region, where the primary fuel
was coal reported sixty deaths, and about 6,000 residents of the valley became
ill with breathing problems and respiratory infections (Edelson 25). In
December 1952, the toll was huge in London from the infamous smog, which caused
up to 4,000 deaths, when levels of sulfur oxides and partic ...
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Networks And Connectivity
Number of Words: 2036 / Number of Pages: 8
... networks come up . The network first developed for the need of the voice communication but after the appearance of data communications need the same network was used .
From the time that electricity and electronics had developed there was rapidly changes at the section of the communications . After the decade of the 1950 the computers started developing , and the communications started playing an important role in peoples life . Also the evolution of the voice communication has created an extensive telephone network which today covers a very large part of the planet , and computers have taken advant ...
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Can We Say "NO" To Recycling
Number of Words: 2392 / Number of Pages: 9
... the problem of
garbage disposal at landfills1. By the accumulation of garbage throughout the
years, space available for garbage has largely diminished. In the states for
example almost 67% of their waste stream ends up in landfills.(Scott 25). This
has in fact increased the price of disposal. As Kimball stated "tipping fees" at
landfills, is so often prohibitive(3), and some cannot find landfills to dump
their garbage. It can cost up to $158 to pick a ton of garbage and dispose
it.(Consumer Reports 1994). Beside, these landfills pollute their surroundings
area with lots of hazardous materials an ...
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The Human Genome Project
Number of Words: 1265 / Number of Pages: 5
... Out Genetic
Inheritance: The U.S. Human Genome Project the First Five Years FY 1991-
1995.' The goal of the HGP is to generate a series of tools that will
change biological research.
The complete nucleotide sequence of human DNA is approximately
50,000 to 100,000 genes in the human genome. The Human Genome Project
estimated to take ten to twenty years to complete. During this time its
anticipated that physical and genetic maps of the human genome will be
completed. The scientific products of the HGP will comprise a resource of
genomic maps and DNA sequence information that will provide deta ...
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Genetic Engineering And Its Fu
Number of Words: 1735 / Number of Pages: 7
... can save hundreds of thousands of human lives. Of course if you value the life of a mouse over a human then you would see differently. Some fear that this science is too powerful, granted we shouldn't let just anyone be able to modify bacteria, or the human genome, but we shouldn't let our fears blind us to the possible benefits of wide-scale genetic engineering.
Medical uses for this technology are virtually endless. With genetics we can filter out any genetic defect, no more down-syndrome, mal-deformed limbs, hereditary cancer, or any other hereditary diseases. With Genetics we can also re-engineer ...
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