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» Browse Science and Environment Term Papers
Eucalyptus Trees
Number of Words: 338 / Number of Pages: 2
... line in the Alps. They are also found in other parts of the world from Ethiopia to Ecuador, from California to Israel. Where eucalypts grow is determined by many environmental factors such as soil type, amount of water, wind direction, the direction the tree is facing and whether there is frost.
THE IMPORTANCE OF THE EUCALYPT
Eucalypt oil is used for cough and colds. The oil is either rubbed on the chest or sniffed up in steam. It is also used in cleansers where strong smells need to be covered up. The taste and smell of eucalypts can be found in sweets. Insects are prevented from chewing the l ...
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How Natural Processes Operate At A Coastal Eographic Environ
Number of Words: 1040 / Number of Pages: 4
... than sedimentary rock. The cliff at Muriwai made of sedimentary rock was eroded back to expose ‘Fisherman’s Rock’ - the shore platform which, made of limestone – tended to erode back slower than the cliff.
The types of wave erosion that caused this are -
Hydraulic Action, when waves hit the cliff, air is forced into cracks, and then as the wave retreats this air expands explosively. Over time the cracks enlarge, weakening the base of the cliff causing erosion.
Attrition is the breakdown of rock particles when they hit Otakamiro point and each other causing the base of ...
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Nuclear Energy And The Environment
Number of Words: 1040 / Number of Pages: 4
... that nuclear energy should not be used
for various reasons. First of all, the waste product, i.e. plutonium, is
extremely radioactive, which may cause the people who are working or living in
or around the area of storage or use, to acquire leukemia and other cancers.
They also show how billions of dollars are spent yearly on safety devices for a
single reactor, and this still doesn't ensure the impossibility of a "melt
down." Two examples were then given of Chernobyl and Three Mile Island, in 1979,
when thousands of people were killed and incapacitated. Finally, the
environmentalists claim that if ...
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Nasa
Number of Words: 278 / Number of Pages: 2
... serve as a weather satellite for a full martian year (two full Earth years). The next Mars lander is scheduled for January 3, 1999 liftoff. Mars Polar will touch down on Mars in December 1999, carrying two softball-size penetrators, the Deep Space 2 mission, that will crash land on Mars some 60 miles north of the landing site. All is going well with ’s Saturn-bound Cassini mission and the Deep Space 1 mission. Cassini will reach Saturn in June 2004 and Deep Space 1 will rendezvous with asteroid 1992KD in July 1999. The Galileo spacecraft at Jupiter went into a safe mode just six hours before it ...
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Acid Rain
Number of Words: 1274 / Number of Pages: 5
... NO DEFENCE
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 PreİCambrian Shield, with quartzite or granite based geology and
little top soil, there is not enough buffering capacity to neutralize even small
amounts of acid falling on the soil and the lakes. Therefore over time, the
basic environment shifts from an alkaline to a acidic one. This is why many
lakes in the Muskoka, Haliburton, Algonquin, Parry S ...
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Surface Area To Volume Ratios In Plants (Arid Vs. Moist Environments)
Number of Words: 1126 / Number of Pages: 5
... conditions are generally smaller and have less photosynthetic surface areas.
Hypothesis:
Alternative Hypothesis: states the hypothesis being tested in this experiment. Photosynthetic structures of plants adapted to arid environments have a lower surface area to volume ratio than plants adapted to less dry or moist environments.
Null hypothesis: there are no differences between the wet and dry habitat plants and observed differences are purely a result of chance. The null hypothesis is formulated to be rejected.
Methods:
The methods used to gather data for this experiment were fairly si ...
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Technetium
Number of Words: 407 / Number of Pages: 2
... 10^6 years. The isomeric isotope 95mTc, with a
half-life of 61 days, is useful for tracer work, as it produces energetic
gamma rays. Technetium metal has been produced in kilogram quantities. The metal
was first prepared by passing hydrogen gas at 1100C over Tc2S7. It is now
conveniently prepared by the reduction of ammonium pertechnetate with hydrogen.
Techne tium is a silvery-gray metal that tarnishes slowly in moist air. Until
1960, techne tium was available only in small amounts and the price was as high
as $2800/g. It is now commercially available to holders of O.R.N.L. permits at a
price of $60/g ...
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Lenz's Law And Faraday's Law Of Induction
Number of Words: 667 / Number of Pages: 3
... law tells us that the current must move
by the use of the use of the right hand rule. If the flux decreases, so the
induced current produces an upward magnetic field that is "trying" to maintain
the status quo.
Let us consider what would happen if Lenz's law were just the reverse.
The induced current would produce a flux in the same direction as the original
change; this greater change in flux would produce an even larger current,
followed by a still larger change in flux, and so on. The current would continue
to grow indefinitely, producing power (=) even after the original stimulus ended ...
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Dna 4
Number of Words: 598 / Number of Pages: 3
... is working and where replication is taking place is known as the DNA fork. The polymerase enzyme helps the nitrogenous base in a given nucleotide to pick up and attach to a complementary base at the 3' end of the DNA template. The 5'-3' strand of template is duplicated in short segments called Okazaki fragments. Ligase is the enzyme that joins the fragments together. The end product of this is an exact copy of the original DNA.
DNA must also be stable, but able to be changed. We know that DNA is stable because of the tightly wound, double helix ladder formation. Also the bonds that keep everythin ...
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Hemophilia 3
Number of Words: 660 / Number of Pages: 3
... also result from spontaneous mutations, but this is less common.
The gene for hemophilia-A is located at Xq28 while the gene for hemophilia-B is located at Xq27.1-q27.2. There are about thirty other disorders associated with the Xq28 area including manic depression and favism. This must indicate that Xq28 includes many different genes which have not yet been isolated.
The primary symptom of hemophilia is uncontrolled bleeding. The disease can range in severity from a mild increase in bleeding, to massive bleeding from even a minor wound. Treatment involves blood or clotting factor transfusions, and thi ...
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