The Forever Moving Land
.... This process has been occurring for roughly about 3.8 billion
years. The mantle is about 2900 km. thick, which lies above a layer of molten
magma that still exists today. The immense heat from the magma (approximately
2700(C) causes convection in the mantle (Figure 1). Convection is caused by
non-uniform temperature in a fluid and density differences. This continuous
convection is the cause of plate movement. Each complete cycle, called a
convection cell, drives the plate in the direction .....
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Mercury
.... planet with an iron core extending outwards 4/5 of the way
to the surface.
Mercury bares a very similar resemblance to our moon because it has a
lot of craters. The craters, which cover seventy-five percent of Mercury’s
surface, were formed by huge rocks that smashed into the planet’s surface. The
largest crater is called the Caloris Basin and it is 1400 km in diameter and is
flooded with molten lava. Mercury also has many cliffs that are usually over
300 miles long and two miles high. The rest of the .....
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Environmental Crisis
.... Sahel is a strip of land that extends for more than 6000 kilometres across
the southern edge of the Sahara desert. It stretches from Senegal and
Mauritania in the west to Ethiopia and Somalia in the east. These nations are
among the world's poorest.
The area is one of social and biophysical crisis because of the way the
population are forced to live; they are destroying the productivity of the land.
The alarming rate of population growth and ever increasing pressure on the land
have initiate .....
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Cloning
.... come to believe that all human beings are equal; but even more firmly,
we are taught to believe each one of us is unique. Is that idea undercut by
cloning? That is, if you can deliberately make any number of copies of an
individual, is each one special? How special can clones feel, knowing they were
replicated like smile buttons. "We aren't just our genes, we're a whole
collection of our experiences," says Albert Jonsen. But the idea, he adds,
raises a host of issues, "from the fantastic to the pro .....
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My Theory Of The Universe
.... room they stand by the walls and always wink for
some reason, so all we can see of them is one of their eyes. (Mercury & Venus)
Then there are three very weird people in the room that are always in the middle
of the room doing the Waltz. They do this some how by themselves and they to
are always winking. They are sometimes on the first floor and sometimes on the
second floor. (Mars, Jupiter, and Saturn) There is also one guy dressed in a
white polyester leisure suit, gold chains, and rings dancing to .....
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Genetically Altered Foods
.... (Nature 559). "
A lot of concern has come from one certain crop and that is maize, which was
altered to an extent. The development was done by a company known to be Swiss,
called "Ciba-Geiby". That which was debated dealt with the Advisory Committee
on Novel Foods and Processes (ACNFP) stating that "A gene resistant to the
antibiotic ampicillin used in an early stage of the developmental process, could
theoretically be passed to man via bacteria lodged in the gut of animals which
eat the maize unpr .....
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Salt And Its Uses
.... on 150 people on the effect of the intake of salt related to high blood
pressure. Result shows that those with normal blood pressure experience no
change at all when placed in a extremely low salt diet, or later when salt was
introduced, Of the hypertensive subjects, half of those on the low salt diet did
experience a drop in blood pressure, which returned to its previous leel when
salt was introduced.
Of course, these are other researcherswhgich tend to support the
findings. A small Indian .....
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Bovine Spongiform Encephalopathy
.... determined.
Microscopic lesions in the central nervous system that consist of a bilaterally
symmetrical, non-inflammatory vacuolation of neuronal perikarya and grey-matter
neuropil was the scientists' overall conclusion (Stadthalle, 1993). These
lesions are consistent with the diseases of the more common scrapie family.
Without further investigation, the conclusion was made that BSE was a new member
of the scrapie family (Westgarth, 1994).
Transmission of BSE is rather common throughout the cattle .....
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Minerals
.... high blood pressure.
Iron is needed to form pigments in red blood cells. These cells
transport the oxygen we need. men have more iron in there blood stream then
women. You should have about 18 mg of iron each day.
Zinc is required to keep your blood sugar level controlled. You also
need to so you can taste and hear properly. It also helps to heal cuts. You
should have about 15 mg per day of zinc.
Boron is a mineral that helps keep strong bones. It affects calcium and
magnesium. This also helps out so .....
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Abstract From: Cloning : Where Do We Draw The Line?
.... would increase significantly"(Elmer-
Dewitt 38).
The experiment the scientists performed is the equivalent of a mother
producing twins. The process has been practiced and almost perfected in
livestock for the past ten years, and some scientists believe that it seems only
logical that it would be the next step in in-vitro fertilization. The procedure
was remarkably simple. Hall and Stillman "selected embryos that were abnormal
because they came from eggs that had been fertilized by more than .....
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Neptune
.... of molten rock, water, liquid
ammonia and methane. The outer third is a mixture of heated gases comprised of
hydrogen, helium, water and methane. The atmospheric composition is 85%
Hydrogen, 13% Helium, and 2% methane. The planet's atmosphere, particularly
the outer layers, contains substantial amounts of methane gas. Absorption of
red light by the atmospheric methane is responsible for Neptune's deep blue
color. Neptune is a dynamic planet with several large, dark spots reminiscent of
Jupiter's .....
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Acid Rain
.... as well as human structures. On
average, acid rain is about nine times more acidic than rain water, and has been
recorded as low as 2.5 on the pH scale (forty times more acidic than water.)
Acid deposition kill fish, soil bacteria, and as well as aquatic and terrestrial
plants. the acid also drain the soil of essential nutrients such as aluminum and
releases them into bodies of water such as streams, lakes, and ponds. These
bodies of water develop highly concentrated levels of these nutrients which can
rea .....
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Acid Rain
.... the acids
fall to the earth in any form it will have large impact on the growth or the
preservation of certain wildlife.
NO DEFENSE
Areas in Ontario mainly southern regions that are near the Great Lakes, such
substances as limestone or other known antacids can neutralize acids entering
the body of water thereby protecting it. However, large areas of Ontario that
are near the Pre-Cambrian Shield, with quartzite or granite based geology and
little top soil, there is not en .....
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The Application Of Science To Engineering
.... such as copper wire, coaxial cable, and fibre optics to their
destination where they are decoded into their original form. Combinations of
long and short bursts of electric current are sent through a circuit thereby
encoding each letter of the alphabet. More efficient transmission facilities
were developed as the mining industry developed. The discovery of electricity
sped up the development of mining through electric lighting and better machinery
and ventilation, which led to better materia .....
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Air Pollution
.... dioxide, for example, comes from electric power plants burning
coal or oil. Others are formed through the action of sunlight on previously
emitted reactive materials. For example, ozone, a dangerous pollutant in smog,
is produced by the interaction of hydrocarbons and nitrogen oxides under the
influence of sunlight. Ozone has also caused serious crop damage. On the other
hand, the discovery in the 1980s that air pollutants such as fluorocarbons are
causing a loss of ozone from the earth's protective oz .....
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