Papers on Science and Environment
Effects Of Deforestation
Words: 774 - Pages: 3.... attributed to deforestation (Delfgaauw, 1996). "Edge
effects" are the destruction or degradation of natural habitat that occur on the
fringes of fragmented forests. The effects for the animals include greater
exposure to the elements (wind, rain etc…), other non-forest animals and humans
(Dunbar, 1993). This unnatural extinction of species endangers the world's food
supply, threatens many human resources and has profound implications for
biological diversity.
Another negative environmental impact of deforestation is that it causes
climate changes all over the world. As we learned in elementary school, plant
life is essential to life on .....
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The Effects Of Foreign Species Introduction On An Ecosystem
Words: 643 - Pages: 3.... and does not contribute itself to the food chain,
the balance is disrupted and there will be less available for the native species.
Once the new species has found its ecological niche however, balance begins to
restore itself.
When the biodiversity in the ecosystem is reduced, the ability of the
ecosystem to grow, or the biotic potential, is as well reduced. More species
residing in an ecosystem which depend on each other allows for a greater chance
of survival and perpetuation. This may occur for several reasons, for example a
bee and a flower. The bee requires the pollen of the flower to make its honey.
However, while gathering the po .....
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Klinefelter Syndrome
Words: 912 - Pages: 4.... many boys with this description had 47 chromosomes in each cell of their bodies instead of the usual number of 46. This extra sex (X) chromosome causes the distinctive make-up of these boys. All men have one X chromosome and one Y chromosome, but sometimes a variation will result in a male with an extra X. This is and is often written as 47,XXY. There are other, less common variations such as 48,XXYY; 48,XXXY; 49,XXXXY; and XY/XXY mosaic. All of these are considered variants.
The major effect of the extra X chromosome in boys with seems to be the function of the testes. The testes produce the major male sex hormone testosterone and th .....
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The Monkey
Words: 736 - Pages: 3.... for
many manipulative tasks. Most have a short, relatively flat face without
great prominence of the muzzle (excepting the baboons and drills). The
hands and feet are prehensile, with, typically, five digits on each, the
first (thumb and big toe) being divergent from the others. Commonly, the
digits have flattened nails, but those of the marmoset are an exception.
Except for the night-roaming durukuli of tropical America, monkeys are
active during the day, moving frequently in bands in search of vegetation,
birds' eggs, smaller animals, or insects to eat. Monkeys are highly social
animals and are often organized in clans headed by an old m .....
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Theory And Research
Words: 1799 - Pages: 7.... quantitative research is determined by
validity and reliability of the research method used (Teevan, 1995:161).
Therefo re, the straight correlation study method used in the survey research of
"Horatio Alger lives" lack components of validity and reliability.
News Article Summary
This article entitled "Horatio Alger lives" is basically 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 ma .....
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Acid Rain
Words: 1273 - Pages: 5.... into sulphuric acid and nitric acid, and air
current can send them thousands of kilometres from the source.When 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 enough buffering capacity to neu .....
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Silverfish
Words: 308 - Pages: 2.... CYCLE: Silverfish undergo incomplete metamorphosis. Adults lay eggs in
small groups containing a few to 50 eggs. The eggs are very small and deposited
in cracks and crevices. A female normally lays less than 100 eggs during her
life span . Under ideal conditions, the eggs hatch in two weeks, but may take up
to two months to hatch. The young nymphs are very much like the adults except
for size. Several years are required before they are sexually mature, and they
must mate after each molt if viable eggs are to be produced. Populations do not
build up rapidly because of their slow development rate and the small number of
eggs laid.
ECONOMIC .....
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Clinical Depression A Disease Like Any Other.
Words: 1120 - Pages: 5.... ones diet as treatment to this illness. Later, in the middle ages, this abnormal behavior was considered to be a result of demonic possession. It was treated with exorcism, flogging and torture to drive the evil spirits from the body.
It wasn't until the late 19th and early 20th centuries that physicians had a more scientific view on depression. Sigmund Freud and Josef Breuer discovered that depression is a psychological and not a demonic force or organic abnormality.
Depression is caused by many factors. The loss of a loved one during childhood or other traumatic experiments (ie. abuse) can increase person's chances of de .....
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Ionic Bond
Words: 536 - Pages: 2.... In this lab, solutions of lead nitrate and potassium iodide will be mixed at a number of dilutions. The reactions will then be observed to see at which point a precipitate no longer occurs. Ksp will then be stated as a range of values at room temperature, and the precipitate test tubes will be heated until the precipitate is dissolved so that Ksp may be observed and determined at different levels.
In this experiment various solutions of lead nitrate and potassium iodide were mixed at a number of different dilutions. Through the observation of the amount – or lack of precipitate formed in each dilution, the mathema .....
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Millennium Bug
Words: 692 - Pages: 3.... hospital systems such as, life support and machines used to monitor a patients vital signs are among the systems at risk. Australian hospitals believe that as many as 60% of their machines may not work properly when the date rolls over. Local testing has identified the ultrasound machines and central monitors which have exhibited year 2000 failures. There could be significant threats to personal safety, for example if an ultrasound wrongly calculated the size of a faetus or administered radiation therapy incorrectly. Also people with heart pace makers could face the possibility of them failing.
Bank accounts could be wiped off the records a .....
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