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Alzheimerâ€™s Disease

... sufferers had their brains examined. A large number of differences were present when comparing the normal brain to the Alzheimer's brain. There was a loss of nerve cells from the Cerebral Cortex in the Alzheimer's victim. Approximately ten percent of the neurons in this region were lost. But a ten percent loss is relatively minor, and cannot account for the severe impairment suffered by Alzheimer's victims. Neurofibrillary Tangles are also found in the brains of Alzheimer's victims. They are found within the cell bodies of nerve cells in ...

Number of words: 739 | Number of pages: 3

Time To Change

... they are on the verge of extinction. Also, pollution caused by humans and their inventions cause a major dilemma. Automobile exhaust fumes and factory pollutants are only a couple of the impurities causing damaging affects to the ozone layer and atmosphere. We depend on the ozone to defend us from harmful UV rays. Finally, we have a major impact on the degeneration of natural resources. Millions of gallons of oil, coal, and other valuable resources are wasted each day. These are just a few of the human disruptions to nature availab ...

Number of words: 747 | Number of pages: 3

False Memory Syndrome

... a lot of controversy surrounding the fact if this condition is real, yet both sides both have their cases. can be created by mere wisps of suggestion. Bits and pieces of an experience are parcelled out to different regions of the brain, memories then settle in the auditory cortex, and memories of its appearance into the visual cortex. Its here in the limbic system they assemble all these memories, gathering them into a cohesive whole. False memories are also commonly in the con drum called "source amnesia". Thanks to the brain's frontal ...

Number of words: 804 | Number of pages: 3

Ethical Procedures And Guidelines Defining Psychological Research

... harm. As psychology advances, there is seen a need for more rules and regulations for the ensurement of subject comfort. Hence, there are many more rules now than even twenty years ago. These rules really encompass a few broad but very important ideas. One of these ideas is protecting the dignity of the subjects. Another important component of this code refers to consent. All of these will be explained in greater detail below. Another gray area in psychology lies in the deception of subjects. There are some basic rules guiding ...

Number of words: 971 | Number of pages: 4

Nuclear Weapons

... power from the energy released when a heavy nucleus is divided, called fission or when light nuclei are forced together, called fusion. In fission, a nucleus from a heavy element is bombarded with neutrons. The nucleus breaks into two pieces, releasing energy and two or more neutrons. Each of these neutrons has enough energy to split another heavy nucleus, allowing the process to repeat itself. This is the chain reaction that makes nuclear weapons possible. In a fusion nuclear device such as a hydrogen bomb, lightweight nuclei are force ...

Number of words: 955 | Number of pages: 4

Effects Of Excessive Pesticide

... or damage the cultivated crop in a detrimental manner. The most economic and effective way to handle these has been to employ pesticides, many of which are now composed of synthetic chemicals, and it is these substances - very beneficial from the economic and production aspects of farming - which can pose risks to human health and the environment if not properly used. Pest problems are not new; in fact, they have been around as long as agriculture itself. But the pest pressure faced by farmers is now as great as it ever was: the world's ...

Number of words: 5605 | Number of pages: 21

Solar Energy

... could provide. Also in Chile a huge water desalting system worked well for nearly 40 years. Ocean water was pumped into troughs. Sunlight that was shining through panes of glass evaporated the water that then condensed water with no salt in it on the glass, which was then collected by running into other troughs. Early 1960â€™s when we found out how to put satellites and astronauts into orbit a source of power was needed to be found that would have to function over a long period of time with a continuous source of electrical power. If thes ...

Number of words: 382 | Number of pages: 2

Dams And Resources

... consequences are felt throughout the watershed, as well as by the web of life it supports. Of all the ways to tamper with or harm a river, a large dam usually has the most immediate and far-reaching effects because of the huge changes it causes to river circulation system. Some 40,000 large dams, most of which were built in the past 50 years, now obstruct the world's rivers. More than 400,000 square kilometers--an area larger than Zimbabwe, and 13 times the size of Lesotho. Volta Reservoir behind Ghana's Akasombo Dam, flooded 4% of tha ...

Number of words: 1199 | Number of pages: 5

Ozone Depletion

... of uses, but are popularly used in aerosol propellants and air conditioning for homes and cars (Singer and Crandall npg). Carbon tetrachloride is one of the major components in making CFC so their damage is similar. When they inter the outer atmosphere, They react with ozone chemicals to release chlorine and bromine that in turn deteriorate the ozone and form "thinning" or "holes." This is catastrophic because they are bonded very strongly together and cannot be broken down by water. This means they travel into the atmosphere virtually ...

Number of words: 794 | Number of pages: 3

Evolution And Creation

... 1809. He said that the more an animal used its body parts the stronger they got. He also said that the less a animal used its body parts the smaller or weaker it became. He thought that these traits became hereditary. Later scientist disproved this theory when more was learned more about genes and how they work. 50 years later Darwin came up with a theory that most scientist believe it to this day. this is called the theory of evolution. His book was called “The Origin of Specie.” Alfred R. Wallace, came out with a th ...

Number of words: 601 | Number of pages: 3

Handling Stress

... are nonspecific responses, however all demands made on the body evoke generalised, nonspecific responses. For example, they all unable you to concentrate as would normally be expected, they activate oneÂ¹s sympathetic nervous system, and they also increase the amount of the hormone epinephrine that is being released into your body. When people say theyÂ¹ve been under going alot of stress they are usually referring to a couple of unpleasant experiences. Now that we have an idea on what stress is the next question we should ask ourselves is Â ...

Number of words: 2045 | Number of pages: 8

Sedimentary Rocks

... are classified into two broad groups, clastic and chemical . Clastic are formed by the gathering of individual grains of loose sediment, such as gravel and sand. Chemical are formed by chemical precipitation from solution. These two categories are not exclusive because most clastic carry some chemical sediment, and most chemical also contain some loose sediment material. All are in general characterized by the parallel arrangement of their mineral layers or beds, which are distinguished from each other by differences in thickness, the ...

Number of words: 693 | Number of pages: 3

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