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» Browse Science and Environment Term Papers
Eugenics
Number of Words: 1506 / Number of Pages: 6
... Mendel’s theories on genetics were rediscovered by Charles Davenport in 1901 that the ideas of modern was given any credibility.4 Davenport conducted experiments that proved what Mendel had said years before in his laws of genetics. Davenport, however, took it another step. He extended Mendel’s laws to include characteristics such as pauperism, alcoholism, and the popular term of the day, “feeblemindedness.”5 Davenport also connected behavior to race, class, and pedigree. While all of Davenport’s ideas were up to date with all current research, such as his conclusion that characteristics suc ...
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UFOs And Alien Life
Number of Words: 789 / Number of Pages: 3
... have also misled UFO investigation by doing actions that confuse and mislead humans. For example, they flash images of car headlights and city lights on the Earth. Pranksters also confuse people by tossing discs from tall buildings and taking pictures of spaceship models. One man was suspected of taking pictures of a realistic chicken-hatching machine. Human psychology has also played a role in the investigation of UFOs. An anonymous psychologist stated that, "When one person sees a strange thing, many people imagine they also see that same thing. (Gurney 28). Another psychologist stated " ...
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God Guided Evolution
Number of Words: 1329 / Number of Pages: 5
... the mystery of man’s and the universe’s origins.
A very highly debated topic within the bigger argument is, “What started it all?” Creationists believe that God merely spoke all that we know into existence, but evolutionists prefer to believe a massive, random explosion spawned the cosmos. Obviously, a middle-grounder could find both preposterous. The very first line of the Holy Bible states, “In the beginning, God created the heavens and the earth.” For such a massive, random occurrence on the evolution side is quite hard for one to fathom, but for a massive, controlled occurrence to take place ...
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Forests And Oceans As Carbon Sinks
Number of Words: 1364 / Number of Pages: 5
... exceeded 350 ppm.
5) There are mainly 3 major sources of carbon dioxide presently and historically. They are industrial activity, land use change and cement plants. The carbon dioxide from industrial activity mainly comes from fossil fuel burning and is by far the most abundant of sources. The carbon dioxide from land use change comes mostly from deforestation which occurs mostly in Brazil, Indonesia and Columbia. The last major source of carbon dioxide in the earth's atmosphere is the emission from cement plants. Carbonaceous material used for making cement releases significant amounts ...
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Rubidium
Number of Words: 930 / Number of Pages: 4
... plants and
animal organisms. Very small traces of Rubidium are found in the leaves of
tobacco, tea, and coffee, as well as some other plants. Rubidium is
similar to lithium and cesium, which are found in combined forms as complex
minerals. It is not found in a pure elemental (metallic) state in nature,
but only as compounds in mineral deposits such as pollucite, carnallite,
lepidolite, leucite, and zinnwaldite, in addition to mineral springs. These
various minerals are found in the United States in California, South Dakota,
New Mexico, and Maine. There are 17 known Isotopes of Rubidium. The only 2 ...
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Nuclear Power
Number of Words: 1824 / Number of Pages: 7
... is a semi-continuous process that enables the following
operations to be carried out with the same equipment: evaporation of the
waste solution mixed with the
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borosilicate: any of several salts derived from both boric acid and silicic
acid and found in certain minerals such as tourmaline. additives necesary
for the production of borosilicate glass, calcination and elaboration of
the glass. These operations are carried out in a metallic pot that is
heated in an induction furnace. The vitrification of one load of wastes
comprises of the fol ...
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Saturn
Number of Words: 954 / Number of Pages: 4
... is an extensive, clear hydrogen-helium atmosphere. Data
on the internal heat flux, the detailed gravity field, and the observed
upper-atmosphere hydrogen-helium ratio satisfy a model of the interior
where the ratio of hydrogen to helium decreases with depth. The gas
density gradually increases downward and the gas transforms into a liquid.
Further down the pressures increase to a critical level, and there the
hydrogen becomes metallic. A small core of silicate material probably
exists at the center.
The Saturnian atmosphere is characterized by counterflowing
easterly and westerly jet streams that, ...
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Drug Identification With Gas Chromatography Mass Spectrometr
Number of Words: 771 / Number of Pages: 3
... restriction that the analyzed substance needs to have sufficient volatility. The theory behind the mass spectrometer is to use the difference in mass-to-charge ratio (m/e) of ionized atoms or molecules to separate them from each other. Mass spectrometry is therefore useful for quantitation of atoms or molecules and also for determining chemical and structural information about molecules. Molecules have distinctive fragmentation patterns that provide structural information to identify structural components. The combination of the gas chromatograph and mass spectrometer is very easy, because both inst ...
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Resonance
Number of Words: 524 / Number of Pages: 2
... a continuous
sound frequency, standing waves are produced in the tube. This creates a pure
tone.
We can use this knowledge of one fourth wavelength to create our own
demonstration. It does not only have to be done using wind, but can also be
demonstrated using tuning forks. If the frequency of the tuning forks is known,
then v=f(wavelength) can find you the length of your air column.
Using a tuning fork of frequency 512 c/s, and the speed of sound is
332+0.6T m/s, temperature being, 22 degrees, substitute into the formula.
Calculate 1/4 wavelength
V=f(wavelength)
wave ...
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Chimpanzee Versus Humans: Similarities & Differences
Number of Words: 520 / Number of Pages: 2
... are about 600 - 800 cc. It is though by scientists
that our brain size grew over time as were evolved into making complex tools and
we became increasingly sophisticated. The human skull is slightly different
from that of our primate ancestors, these changes occurred over thousands of
years of evolution. Over time the humans skull and teeth have decreased from
that of our ancestors. The chimp has much larger canine teeth and a protruding
jaw line. A similarities though can be seen on how uniform the layout of teeth
are between the humans and chimps, both possess canines, premolars, and molars. ...
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