Introduction To Evolution
.... their numbers increase. The elimination of the unfit,
or the "survival of the fittest," is known as Natural Selection because it is
nature that discards or favors a particular being. Evolution takes place only
when natural selection operates on apopulation of organisms containing diverse
inheritable forms.
HISTORY
Pierre Louis Moreau de Maupertuis (1698-1759) was the first to
propose a general theory of evolution. He said that hereditary material,
consisting of particles, was transmitted from parents to offspring. His opinion
of the part played by natural selection had little influence on other
naturalists.
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Tim O'Brien's The Things They Carried Eating Them Away
.... rather a constant personal preoccupation that seems to flow through
the collection of stories. O'Brien shows how the memories of the war take
on a parasitic form, and uses himself as an example.
In the chapter ³Speaking of Courage², O'Brien introduces a character by
the name of Norman Bowker. In the story Norman finds him self home after
serving his time in Vietnam. Even though he is back in his home town,
things do not seem the same to him. The was seems to have put a new spin
on his life. Most of the story he spends driving in circles while thinking
about the war and his lack of place in his old society. The war becomes
his .....
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The History Of White-Tailed Deer In Kentucky
.... autumn, but
usually bear only one fawn. Does breeding at age 1 1/2 or older generally have
twins, and sometimes triplets. By November, Kentucky's deer population typical
increases slightly more than one fawn per doe. Although many more fawns are
born than one per doe, some will die before the hunting season arrives.
A deer's home range averages about 500 acres. In mountains, the home
range may exceed 1,000 acres. Even though this size area can support about 40
deer, these animals will not always stay just within their home range. Many
will travel on and off that amount of land different times of the year looking
for the best .....
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Darwinism: The Theory That Shook The World
.... people of science ever.
Charles Darwin was born in Shrewsbury-Shropshire, England on Feb 12,
1809 (GEA & RBi p 42). He was the fifth child in a wealthy English family with
a history of scientific achievement with his paternal grandfather Erasmus Darwin
who was a physician and a savant in the eighteenth century (GEA & RBi p 42). As
a young boy Darwin already showed signs of his love for nature. When he was not
reading about nature and its quirks he was out in the forest looking for wild
game , fish, and insects (Campbell p 424). His father, although noting his
son's interest in nature, felt that all the discoveries of .....
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Penguins: The Eyes Have It!
.... the rocky terrain on which they live quite well.
Long of body and short of leg, they probably poke their heads forward as
an aid to balance. And as for looking at the ground, they're merely-like
us-keeping an eye on where they're going.
The human eye is adapted for aerial vision, which is why scuba divers-or
even you and I in the local swimming pool-must wear goggles or a face mask
to re-introduce air in front of our eyes in order to see clearly.
Among vertebrates in general, the bird eye is frequently described as the
most efficient. Its superior quality, combined with the fact that a large
number of birds-cormorants, pel .....
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Theory And Research
.... a survey
correlation study done on two distinct social classes; sons of wealthy fathers
and sons of lower income fathers. The goal in this research was to determine
which sons of the two distinct social groups mentioned, were to likely make more
money in the future. Therefore, they surveyed 400,000 males age 16 and 19 that
was still living with their fathers. After the eleven year period the same
groups of men were again surveyed, and their incomes was correlated with their
fathers. The research revealed that overall sons of wealthy fathers was more
likely to earn higher salaries than their dads. Based on this fact the
re .....
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DNA: The Thread Of Life
.... is an inherited disease that develops
between the ages of 30 and 45, can be diagnosed before any symptoms appear.
This can be hard for both the individuals with the disease and their family.
There is a 3 billion dollar project underway right now called the Human
Genome Project, a 15 year program to make a detailed map of every single gene in
human DNA. With automated cloning equipment to steer scientists through the DNA,
scientists are finding human genes at the rate of more than one a day. This may
not sound like very much but as technology increases the rate at finding them
will increase. Since January 1993 to January 19 .....
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Photoperiodism
.... Some scientists are not certain that the biological clock of any
organism is completely endogenous. They think that even under the most
constant of laboratory conditions living things are aware of the Earth's
rotation and that this has an effect on the wheelof their clocks. However,
many scientists believe that such factors are not essential to the
functioning of biological clocks.
Word Count: 276
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Mechanical Energy
.... movement of the windsurfer has a different explanation.
The windsurfer is propelled along by a sail which collects mechanical
energy from the winds that sweep along the water. This energy has been
produced by the sun which warms the earth's surface and sets the air above
in motion. The sun's heat comes to the earth as a form of radiant energy.
When the heat reaches the surface of the earth, it causes the land or seas
to rise in temperature.
The sun is very hot. Infact, the center of the sun can reach
temperatures of up to 27 million degrees Fahrenheit. This is because of
another kind of energy reaction where new sub .....
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The Tiger
.... people, but some do
become man eaters. If a Tiger becomes a man eater it is because of a wound,
weakness, or just because it is to old. The young accompany their mother on the
hunt when they are 5 to 6 months of age. Tigers begin to hunt alone when they
are just eleven months old. Before the young can hunt alone, the mother will
demonstrate how it is done(Comptons Interactive Encyclopedia 1993).
Tigers usually prey on deer wild cattle called gore, and wild pigs.
Whenever humans have domestic animals, Tigers will feed on cattle, horses, sheep,
and goats. A cattle eating Tiger will kill an ox about every 5 days, or from 60
t .....
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Reproduction: A-Courting To Nature!
.... epochs when
environmental change was making life difficult for single-sex species such
as bacteria and algae. Generally, these reproduced by splitting into
identical copies of themselves. New generations were thus no better than
old ones at surviving in an altered world. With the emergence of the
sexes, however, youngsters acquired the qualities of two parents. This
meant that they were different from both - different and perhaps better at
coping with tough problems of survival. At the same time, nature had to
furnish a new set of instincts which would make "parents" out of such
unreflective entities as mollusks and jellyfish.. .....
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Tiger Subspecies
.... tells
you that there are people that care. But there are so little tigers left that
we can not even keep track of them. We should look at the trend that the
population is taking, rather than the number as a slice in time. Just as you
might say of a young member of the Hunt family, that they were very wealthy. A
hypothetical individual was 24 years old and had $1,000,000. What isn'tavailable
in this one time analysis was that this Hunt inherited $24,000,000 at age 21,
has no education nor ever worked. At age 22 Hunt had $9,000,000 and at 23 had
$4,000,000. Now instead of saying Hunt was rich, we would say Hunt is in trouble.
Tige .....
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