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» Browse Science and Environment Term Papers
Cellular Respiration
Number of Words: 366 / Number of Pages: 2
... a molecule of coenzyme A each to form two acetyl coenzyme A molecules. These molecules are processed in a complex pathway called the Krebs cycle. As the Krebs cycle progresses through both pyruvic acid molecules, six molecules of NADH, two molecules of ATP, and additional carbon dioxide are all formed. FAD picks up a hydrogen atom from each pyruvic acid molecule, and a total of 2 FAD2 are formed. NADH and FAD2 transport their hydrogen atoms and electrons to the electron transport chain. The electrons are passed down the chain of attracting molecules until they reach oxygen. Joined with hydrogen, ...
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Hypnosis
Number of Words: 763 / Number of Pages: 3
... means sleep. Braid used it to describe the hypnotic state people would be in after . We now know that is not sleep, but an altered state of consciousness.
Many people believe the is mythical and magical. Those supporting the mythical view of often cite studies which show that during the brain shows electrical changes and that the brain waves under differ from those during waking consciousness.
There are many problems with the realism of . Many people feel that it's brought up upon the troubled people themselves. One clue as to the falsehood of the common view of is the fact that it usua ...
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The Depletion Of The Ozone Layer
Number of Words: 571 / Number of Pages: 3
... the 1920's.
They contain chlorine, fluorine, and carbon atoms which all form bonds
with the rare ozone molecules. A few more products with CFC's are coolants
for refrigerators and air conditioners, foam products, such as cups, and
insulation for houses.
Considering that ozone molecules are so rare, it is extremely
important to keep them intact. Without them, radiation would leak into the
earth at tremendous amounts. The radiation comes in the form of UV rays
that cause many types of cancer. Pollution also plays a role in how severe
the problem gets. It will eventually eat a hole in the oz ...
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Insects
Number of Words: 458 / Number of Pages: 2
... cells
through branching out to call cells of body. The nervous system consists of a
brain receiving information from eyes, antennae, and controls the whole body and
2 nerve cords containing ganglia fused together to control activities of the
segment without the help of the brain. insect muscular system is made up of a
few thousand samll but string muscles allowing the insect to carry objects
heavier than it. The digestive system is basically a long tube where food enters
the mouth to the crop where it is stored, gizzard where it is grinded, stomach
where it is digested, then the undigested parts and ...
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Discovery
Number of Words: 602 / Number of Pages: 3
... Winnie the Pooh. She felt that she had a lot in common because they both felt like misfits. Both her mother and grandmother know that Sally doesn’t know much about their Aboriginal heritage, and so therefore tell her that she is Indian.
“Come on, Mum, what are we?
What do the kids at school say?
Anything. Italian, Greek, Indian.
Tell them you’re Indian.”
Eventually Sally find’s out that she is Aboriginal and by finding this out, starts her on a quest for knowledge.
This feeling of having not much idea of who you are may make you want to go and find out the truth. A big example of this is Aborigi ...
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Aluminum: The Element
Number of Words: 326 / Number of Pages: 2
... other metals such as sodium, potassium,
iron, calcium, and magnesium. Charles M. Hall and Paul L. T. Heroult,
independently and almost simultaneously found out that alumna, or aluminum
oxide, would dissolve in fused cryolite (Na3AlF6) and then could be
decomposed electronically into a crude molten metal.
Uses-
The given volume of aluminum weighs less than one-third than steel. Its
high strength to weight ratio makes it very useful. We use it from foils to
cans, to space shuttles. This element is very, very useful and is
recyclable. We use aluminum for conductors as well. We use it to weld
hardw ...
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Give An Overview Of Life Through The Tertiary, In Relation T
Number of Words: 1368 / Number of Pages: 5
... the modern world took shape. The global ecosystems acquired their present configuration and prominent topographic features assumed the forms we are familiar with today.
No mass extinction marked the transition from the Paleogene to the Neogene. During the 24 million years of the Neogene, however, life ad Earth’s physical features have changed significantly. The most far-reaching biotic changes were the spread of grasses and weedy plants and the modernization of vertebrate life. Snakes, songbirds, frogs, rats and mice expanded dramatically too, and humans evolved from apes. The Rocky Mountains a ...
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Could Air Pollution Have A Negative Impact On Water Quality?
Number of Words: 2630 / Number of Pages: 10
... risk nationally. Its federal laws are enforced fairly and effectively to protect human and environment. Environmental policy is based upon the concern for natural resources, human health, economic growth, energy, transportation, agriculture, industry, and international trade. All parts of the society are involved. The EPA is responsible in making our communities and ecosystems diverse, sustainable and economically productive. Overall, the United States plays a leadership role locally and globally.
With its policies, the EPA establishes programs to promote water pollution prevention. This was ...
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Atomic Structure
Number of Words: 827 / Number of Pages: 4
... molecules are so small, their existence was not easy to establish. Indirect evidence for molecules was strong during the second half of the 19th century, and the first explicit evidence was found when Brownian motion was correctly understood and studied in about 1906 by physicists Albert Einstein and Jean-Baptiste Perrin. There are many kinds of molecules, and it was clear that simplifying ideas were needed. The Russian chemist Dmitri Mendeleev argued that there was a set of more basic entities of which all molecules are constructed, the chemical elements, which consist of atoms of only one kind ...
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Asthma 2
Number of Words: 447 / Number of Pages: 2
... between them is less complete. The bronchi in such patients become chronically narrowed, causing a progressive loss of capacity for physical exertion. The prevalence of asthma is only about 1 or 2 percent worldwide but varies greatly from country to country. In the United States, asthma affects about 6.9 percent of children. Typically, an asthma attack begins within minutes after exposure to a triggering agent. Symptoms include a sensation of tightness in the chest, coughing and wheezing, and difficulty in breathing. Persons having attacks usually find it more difficult to exhale then inhale, which ...
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