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» Science Essays and Papers
The Big Bang
<view this essay>.... the universe rapidly expanded.1 The Big Bang was the start of time and
space. The matter and radiation of that early stage rapidly expanded and cooled.
Several million years later, it condensed into galaxies. The universe has
continued to expand, and the galaxies have continued moving away from each other
ever since. Today the universe is still expanding, as astronomers have observed.
The Steady State model says that the universe does not evolve or change in
time. There was no beginning in the past, nor will there be change in the
future. This model assumes the perfect cosmological principle. This principle
says that the universe is the same ev .....
Number of words: 1282 | Number of pages: 5 |
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The Wolf
<view this essay>.... colors like black, brown, white, or even a reddish tan with
long bushy tails. All wolves may look alike with their similar faces.
They also may look like a German Shepherd. To tell the difference the wolf
would have a larger and wider head than any dog. The young ones look like
they have smaller heads but they look almost exactly how they would look
if they were full grown with small paws. The wolf would move around by
walking, running, or in a big pack with it’s family. The pack can have as
much as 36 wolves. Each pack always has two head leaders, one male and the
other female. The pack may hunt and go as far as 130 to 13,000 sq. km.(50
to5,000 sq. miles)—an .....
Number of words: 926 | Number of pages: 4 |
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Human Cloning Isn't As Scary As It Sounds
<view this essay>.... but in the misunderstanding of its
significance.
Producing a clone of a human being would not amount to creating a "carbon copy"—
an automaton of the sort familiar from science fiction. It would be more like
producing a delayed identical twin. And just as identical twins are two separate
people—biologically, psychologically, morally and legally, though not
genetically—so a clone is a separate person from his or her non-contemporaneous
twin. To think otherwise is to embrace a belief in genetic determinism—the view
that genes determine everything about us, and that environmental factors or the
random events in human development are utterly insignificant. .....
Number of words: 1335 | Number of pages: 5 |
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Gold 2
<view this essay>.... Periodic Table – 1B
? Density at 68 F – 19.3 g/cm^3
? Boiling Point – 5,370.8 F
? Melting Point – 1,945.4 F
? Number of Protons/Electrons – 79
? Number of Neutrons – 118
? Classification – Transition Metal
? Crystal Structure – Cubic
Facts:
? Date of Discovery – Circa 3000 BC
? Discover – Unknown
? Name of Origin – From the Old English word geolo (yellow)
? Symbol Origin – From the Latin word aurum (gold)
? Uses – electronics, jewelry, coins
? Obtained From – crust of the earth, copper ores
Atomic and Chemical Properties:
In it’s usual state – at .....
Number of words: 732 | Number of pages: 3 |
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A Look At Anemia Related To Nutritional Issues
<view this essay>.... APPENDIX B..............................................................................................
INTRODUCTION
"Anemia can be defined as a decrease in the oxygen-carrying capacity of the blood caused by low hemoglobin concentration" ("A Practical Guide", 1). "Cells in the body require oxygen to fully utilize fuels. The oxygen is transported from the lungs to tissues throughout the body via red blood cells. Oxygen binds to hemoglobin, a specific molecule within each red blood cell. This molecule consists of heme, which is a red pigment, and globin, which is a protein. If the amount of functioning hemoglob .....
Number of words: 4320 | Number of pages: 16 |
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Transitions Of Reptiles To Mammals
<view this essay>.... dust. The term transitional fossil can be used in conjunction with
the term general lineage, together they help explain the how one species became
another.
"General lineage":
This is a sequence of similar genera or families, linking an older to a very
different younger group. Each step in the sequence consists of some fossils that
represent certain genus or family, and the whole sequence often covers a span of
tens of millions of years. A lineage like this shows obvious intermediates for
every major structural change, and the fossils occur roughly (but often not
exactly) in the expected order. However, usually there are still gaps between
each of the groups. .....
Number of words: 2757 | Number of pages: 11 |
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Analytical Chemistry
<view this essay>.... the tests should be simple, direct, and easily performed with available
instruments and chemicals. Test results may be an instrument reading, and
observation of a physical property, or a chemical reaction. Reactions used in
qualitative analysis may attempt to cause a characteristic color, odor,
precipitate, or gas appear. Identification of an unknown substance is
accomplished when a known one is found with identical properties. If none is
found, the uknown substance must be a newly identified chemical. Tests should
not use up excessive amounts of a material to be identified. Most chemical
methods of qualitative analysis require a very small a .....
Number of words: 1120 | Number of pages: 5 |
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Cloning
<view this essay>.... is an organism that has the same genetic information as another organism or organisms. On February 22, 1997 the first mammal too ever was cloned at the Roslin Institute in Edinburg, Scotland (Staples). It was a sheep by the name of Dolly. Dolly was cloned from an adult sheep; using donor DNA and mammary cells from a female sheep cloned it. The process is very technical and I don’t fully understand it myself. From what I have researched I have come to understand that currently is very “Hit or Miss”(Hawley). From 277 attempts, Dolly was the only successful attempt. The point is however that we now have a man created sheep, what else could be done in the near fut .....
Number of words: 1258 | Number of pages: 5 |
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