Acid Rain
.... that acidic rain may be causing
great ecological damage to the planet. The problem was that by the time that the
scientist found the problem it was already very large. Detecting an acid lake is
often quite difficult. A lake does not become acid over night. It happens over a
period of many years, some times decades. The changes are usually to gradual for
them to be noticed early.
At the beginning of the 20th century most rivers/lakes like the river
Tovdal in Norway had not yet begun to die. Ho .....
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Acid Rain
.... tons of nitrogen oxides to our
atmosphere worldwide. When fossil fuels are ignited like oil and coal, they
release carbon dioxide, a so-called greenhouse gas that traps heat within the
earth's atmosphere which causes global warming that is taking place right now.
Also, it releases sulfur dioxide, nitrogen oxide and various metals (mercury,
aluminum) that are released into the atmosphere that reacts with other airborne
chemicals (water vapor and sunlight) to produce sulfuric and nitric acid which
later .....
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Advantages Of Producing Crops Through Use Of Hydroponics
.... it is easier to control the plant growing
environment. Some others are restricted supply of suitable water, lack of
suitable soil, high labor cost of traditional cultivation, high cost of
sterilizing soil, and there is a greater reliability and predictability of plant
production. In addition, It's easy!
Depending on what is being grown, most of the time hydroponic plants
require less attention than soil-grown crops. Because of this, it can relieve
some people of the added responsibility that soil-grown .....
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Problems Caused By Air Pollution
.... problems (Edelson 25,
26). New York experienced several killer smogs, which in a later analysis
attributed, 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 bre .....
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Air Polution
.... by a number of different types
of pollutants. The first type, particulate matter, consists of solid and liquid
aerosols suspended in the atmosphere. These arise from the burning of coal and
from industrial processes. Atmospheric particles can scatter and absorb sunlight
which reduces visibility. Particles also reduce visibility by attenuating the
light from objects and illuminating the air causing the contrast between the
objects and their backgrounds to reduce. Not only does it effect visibility, but
it .....
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Air Pollution
.... during this
period of time. The increased use of fossil fuels today also builds on this.
There have been many attempts at stopping air pollution. The Clean Air
Acts were effective for a little while. They made using some polluting
substances illegal. This did not work because people simply did not listen.
Solar Energy is another attempted solution. This type of energy is good
because it is an alternative energy source to coal and other polluting fossil
fuels. The problem with solar energy is that .....
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Aluminium
.... minerals. An aluminosilicate such as
felspar (KAlSi3O8) is the main constituent of many rocks such as granite, which
is quartz and mica cemented together with felspar. These rocks are gradually
weathered and broken down by the action of carbon-dioxide from the air dissolved
in rainwater forming ‘kaolin'. This is further broken down to form other
substances, ultimately resulting in the formation of Aluminium deposits.
Where and how Aluminium is mined?
Aluminium is never found in it's pure state until it h .....
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The Autumn And The Fall Of Leaves
.... marshes rustles so slightly, no men, though men are the
most refined of living beings, put so passing a stress upon their sacred
whispers or their prayers. The leaves are hardly heard, but they are heard just
so much that men also, who are destined at the end to grow glorious and to die,
look up and hear them falling.
There is an infinite amount of qualities of describing the leaves. The
color is not a mere glory: it is intricate. If you take up one leaf, then you
can see the sharp edge boundaries whi .....
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Animal Experimentation
.... is said to have
been the first to conduct demonstrations with live animals--specifically pigs-a
practice later extended to other species and termed "vivisection" (Loew, 1982).
However, it was not until the sixteenth century that many experiments on animals
began to be recorded. In 1628, William Harvey published his work on the heart
and the movement of blood in animals (French, 1975). In the 18OOs, when France
became one of the leading centers of experimental biology and medicine-marked by
the work of s .....
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David Suzuki's A Planet For The Taking
.... and therefore we needn't worry." These
words suggest that we are willing to reap the rewards of our vast resources but
we fail to see the harm that we are doing, and will continue to do if we do not
stop these actions.
Although his approach for explaining his beliefs changes, Suzuki's tone
of great concern remains consistent throughout the essay. After his views are
presented, Suzuki begins to tell us what we have done to our country and how we
are destroying it. Present day Canadians are compared t .....
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Bats
.... pane). 6. Nearly 1,000 kinds
of bats account for almost a quarter of all mammal species, and most are highly
beneficial. 7. Worldwide, bats are the most important natural enemies of night-
flying insects! 8. A single brown bat can catch over 600 mosquitoes in just one
hour! 9. Tropical bats are key elements in rain forest ecosystems which rely on
them to pollinate flowers and disperse seeds for countless trees and shrubs. 10.
Bat droppings in caves support whole ecosystems of unique organisms, incl .....
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Between The Forest And Greed
.... does not happen. With every industry, every
aspect is carefully debated and analyzed for the short and long term outcomes.
Any industry that capitalizes on earth's resources figuratively signs a
pact with the earth. This pact bonds this industry to the earth and requires
that any harvesting of resources is not done so with haste and waste. There is
a symbiotic relationship between the two. For the industry to exist there must
be a constant supply of the resource. Without a constant supply the ind .....
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"Biodiversity"
.... cutting, and an
increase in population contribute to this problem. An example of this is the
gold mining operation that we saw in the video. While mining, Mercury was
dripping into the water. The mercury then got into the fish and into the humans
who ate the fish.
Biodiversity promotes a healthy environment. Environments rich in
biodiversity are stronger and can with stand things such as drought, disease,
and other stresses that environments that lack it cannot. In the video, during
the drought, .....
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Can We Say "NO" To Recycling
.... for the government to overcome
such problems of recycling to be worth while and for manufacturers and consumers
to consume less. Recycling has proven its efficiency in solving 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 .....
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Cfcs Cause Deterioration Of The Ozone Layer
.... a majority of our weather takes place.
Beyond the troposphere is the second region of the atmosphere, the
stratosphere. The stratosphere extends from roughly 6.5-30 miles from the
earth's' surface. The air on this region is much less dense than in the
troposphere, and it's a lot drier. The stratosphere is the area that contains
the majority of the ozone layer.
Past the stratosphere is the mesosphere which extends to 50 miles above
the planet. The last region is the thermosphere. The thermospher .....
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