Acid Rain
.... 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. However by 1926 local inspectors were
noticing that many of the lakes were beginning to show signs of death. Fish were
found dead along the banks of many rivers. As the winters ice began to melt off
more and more hundreds upon hundreds more dead fish (trout in particular) were
being found. It was at this time that scientist bega .....
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Acid Rain
.... 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 can be carried long distance from their source and be deposited as rain
(acid rain) but acid doesn't just came from rain but also in the forms of snow,
hail, fog, and mist.
Forests are a complex ecosystems that involves trees, soil, water, the air,
climate and other living organisms that support the community of wildlife:
an .....
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Advantages Of Producing Crops Through Use Of Hydroponics
.... 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 plants require.
As one can see, there are many advantages to this system of growing
plants. Since its origination, thousands of companies have sprung up dealing
solely with hydroponics and hydroponic equipment. Maybe someday, when man
inhabits outer-space, this method will be the main protocol for growing
consumable items. .....
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Problems Caused By Air Pollution
.... 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 particulates rose above
normal (Edelson 26). Air pollution also increased deaths from chronic lung
disease in the United States. "Al .....
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Air Polution
.... 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 hastens the erosion of building materials and the corrosion of metals,
interferes with the human respiratory system, and brings toxic materials into
the body. The small particles cause chronic bronchitis, bronchial asthma,
emphysema and lung cancer (Hodges 59). The second type is sulfur oxides which
come from the burning of co .....
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Air Pollution
.... 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 it is extremely expensive, but it
has been used extensively throughout the world.
One of the more effective ways of eliminating air pollution is the
making of electric cars. The use of these electric cars would completely
reduce the amount of pollution in the air caused by gasoline powered cars.
These cars are run on batter .....
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Aluminium
.... 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 has been refined. Aluminium
is made when refining alumina, which is in turn found from the ore ‘bauxite'.
Bauxite is often mined in the opencast method.
Aluminium deposits are found in many countries, but the countries with
significant deposits include: Guinea, Jamaica, Surinam, Australia and Russia.
How is Aluminium refined? .....
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The Autumn And The Fall Of Leaves
.... 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 which are stained with a deep yellow-gold and
are not defined. Nor do shape and definition ever begin to exhaust the list.
For there are softness and hardness too. Beside boundaries you have hues and
tints, shades also, varying thicknesses of stuff, and endless choice of surface,
and that list also is infinite, and the division .....
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Animal Experimentation
.... 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 such scientists as Francis Magendie in experimental physiology,
Claude Bernard in experimental medicine, and Louis Pasteur in microbiology and
immunology-investigators regularly used animals in biomedical research (McGrew,
1985).
Research in biology progressed at an increasing pace starting around 1850, with
many of the advanc .....
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David Suzuki's A Planet For The Taking
.... 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 to native Canadians which
successfully serves its purpose in illustrating how, for centuries, people lived
off the natural resources in Canada. With the development of science and
technology, we have developed better ways of mass harvesting resources but these
methods are taking at a faster rate than nature can sustain. Scie .....
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Bats
.... 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, including
bacteria useful in detoxifying wastes, improving detergents, and producing
gasohol and antibiotics. 11. More than 50% of American bat species are in
severe decline or already listed as endangered. Losses are occurring at
alarming rates worldwide. 12. All mammals can contract rabies; however, even
the less than half of .....
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Between The Forest And Greed
.... 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 industry
dies. Now, many people believe that the logging industry's objective is to cut
down all the trees that are currently standing. As horrific as this scenario
may sound, it is far from the truth. Without trees to cut down there is no
industry. The logging industry is not so foolish as to rampage the forests and
cut down .....
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