|
|
|
» Browse Science and Environment Term Papers
Oxygen
Number of Words: 2585 / Number of Pages: 10
... isolate oxygen,
but that Priestley, who independently achieved the isolation of oxygen somewhat
later, was the first to publicly announce his findings. The interpretation of
the findings of Priestley and the resultant clarification of the nature of
oxygen as an element was accomplished by the French scientist Antoine-Laurent
LAVOISIER (1743-94). Lavoisier's experimental work, which extended and improved
upon Priestley's experiments, was principally responsible for the understanding
of COMBUSTION and the establishment of the law of conservation of matter.
Lavoisier gave oxygen its name, which is derived ...
|
|
Acquired Immune Deficiency Syndrome
Number of Words: 736 / Number of Pages: 3
... of the individual. The new advances in technology are helping postpone the advancement of the disease.
Lets start at the beginning. First, lets learn what AIDS is. AIDS is an acquired defect in your immune system. The passing of any bodily fluids could technically be used as a passage way for the virus. Once infected with HIV it will begin to attack your CD4+cells, commonly known as your t-cells or t-helpers and they will begin to drop in numbers. You measure the damage to your immune system by HIV and your ability to fight infection. This virus then spreads and damages your t-cells where ...
|
|
Turner Syndrome
Number of Words: 1105 / Number of Pages: 5
... Chromosome X, Monosomy X, Morgagni-Turner-Albright
Syndrome, Ovarian Dwarfism, Turner Type, among others.
SYNDROME CHARACTERISTICS A reduced growth in height is the commonest
visible characteristic of the syndrome, (the average adult height is 4
feet 8 inches) and may be the only sign before puberty. Their body
proportions are normal. Girls with this syndrome may have many middle ear
infections during childhood; if not treated, these chronic infections
could cause hearing loss. Up to the age of about 2 years, growth in height
is approximately normal, but then it lags behind that of other girls. ...
|
|
Global Economy And The Environment
Number of Words: 955 / Number of Pages: 4
... corporations. This is because MNCUs may
not be as knowledgeable as local corporations in resource utilization and land
management. This also refers to the notion of Rthe locals know their land
better than anybody elseS. The tropical rain forest of Brazil is a good example
of this. The RindigenousS or the local people have a good understanding of how
to extract and utilize its resources in a very sustainable manner. However when
a multinational timber company comes into Brazil, result of their actions will
probably be more harmful, due to the fact that they are not complying to the
RtraditionalS ...
|
|
Carbon Dioxide Poisoning
Number of Words: 1104 / Number of Pages: 5
... poisoning gives no physical evidence of its presence. But, when taught to see and look for the warning signs of carbon monoxide, deaths in the home due to carbon monoxide poisoning can be prevented.
Sometimes, in a home the hot water supply is low, or the furnace fails to keep the house warm. A natural reaction in any of these situations would be to turn up the tempeture on both appliances. But, did you know that a low supply of hot water, and a furnace that does not keep a house warm could be a warning sign of a CO problem ("More on CO" 97)? Additionally, by turning up the temperature on bot ...
|
|
Nuclear Powernuclear Power
Number of Words: 358 / Number of Pages: 2
... water to create enough energy to generate
electricity. (World Book vol. 14, 586)
Nuclear power plants generate only about eleven percent of the world’s
electricity. There are around 316 nuclear power plants in the world
that create 213,000 megawatts of electricity. (INFOPEDIA)
Radioactive, or nuclear, waste is the by-product of nuclear fission.
Fission occurs when atoms’ nucleus’ split and cause a nuclear reaction.
(General Information) When a free neutron splits a nucleus, energy is
released along with free neutrons, fission fragments that give off beta
rays, and gamma ...
|
|
Copper And Aluminium
Number of Words: 868 / Number of Pages: 4
... amounts is vital to all plant and animal life.
The properties that make copper extremely useful include -
Conductivity - Silver is the only better conductor, but is too expensive for common use. Copper also conducts both electricity and heat extremely well, which makes it extremely useful for cooking utensils, radiators, and refrigerators.
Malleability - Copper is highly malleable. It does not crack when hammered, stamped, or forged, and can be worked when it is both hot and cold. It can be rolled into sheets less than 0.05mm thick. Cold rolling changes the physical properties of copper, and ...
|
|
Astrology
Number of Words: 4422 / Number of Pages: 17
... "route of animals."
The sun enters the first zodiacal sign, Aries , and then continues its path
through the remaining eleven signs. The twelve signs of the zodiac are: Aries,
Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn,
Aquarius, and Pisces.
The moon and the planets pass through the signs too, but obviously at
different speeds from those of the sun. The moon, which is close to the earth,
circles the zodiac in twenty-nine days, while the planet Pluto needs two hundred
fifty years. Planets also can be seen to slow down, stop, and even reverse
directions in re ...
|
|
Ozone
Number of Words: 841 / Number of Pages: 4
... called a photochemical reaction, because sunlight is required.
The product is known as smog. The notorious brownish color of smog is due to
nitrogen dioxide of the mixture. Increased temperature stimulate the reaction,
which is why ozone conditions are worse in the summer. It is an oxidant,
meaning it takes electrons away from other molecules, and disrupts key
structures in cells by starting chain reactions.
Ozone is a serious national problem. Half of the largest urban areas in
the United States exceed the ozone standards. The worst regions in the US
include California and the Texas Gulf coast ...
|
|
Planting Flowers
Number of Words: 2698 / Number of Pages: 10
... plants are wild, not all wildflowers are natives" (Loewer 6). Where did the non-native flowers come from and how did they get here? "Probably the largest number of plants accidentally introduced in this country arrived in ships' ballast. Because the early merchant ships that sailed from Europe were empty of goods on the trip over, their hulls were loaded with dirt so that they would float properly. When they arrived in America, the dirt was removed and left onshore. The seeds it contained then began to spread, bloom, produce more seed, and eventually spread" (6). Interesting enough, I have lear ...
|
|
|
