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» Browse Science and Environment Term Papers
Aquaria In Relation To Science
Number of Words: 529 / Number of Pages: 2
... is what I spoke about in the previous paragraph. Those bacteria grow best on objects besides gravel. That is why having plastic plants and other décor in the tank doesn’t just make the tank look nice but also give the bacteria a better place to grow. Mechanical filtration aids in biological filtration in two ways, the water is filtered through a medium that helps dissolve the ammonia and nitrites into smaller pieces easier for the bacteria to convert, and filter out bigger objects from the water such as excess food. Generally the filter media is activated carbon within a floss cartridge.
T ...
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California Water Pollution
Number of Words: 368 / Number of Pages: 2
... of 1984. This act states that there is to be no discharge of hazardous wastes within an half a mile of a potential drinking water source. This is something being done, but water does travel and seep through ground so what is this act really doing. The clean water act is designed to protect ground water indirectly by protecting the quality of surface water. The standards for the surface water require sewage treatment , and discharge of industrial and municiple waste water into surface water. There is also the Comprehensive Environmental Response Compensation and Liability Act. (CERCLA) This creat ...
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Australopithecus
Number of Words: 306 / Number of Pages: 2
... have also been found.
The first discovery of an australopithecus fossil was made in 1924. The body of
the australopithecus is smaller than humans, but biffer than chimpanzees. Also,
The brain size of australopithecus is bigger than humans at about 475 cubic
centimeters. This is also biffer than the chipanzees, but the brains were not
developed in most areas. For example speech. The australopithecus species all
had mostly the same features with a low forehead, a "bony ridge"over the eyes, a
flat nose and no chin. Their jaws stuck out and they had large back teeth. Even
today, many more species of a ...
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Research And Patterns Of Thinking
Number of Words: 422 / Number of Pages: 2
... to perform and even harder task, choosing a major. It's very difficult to decide what you want to do with the rest of your life in just a short time. I had the plans of working in the woods, so I talked with some friends who work with wildlife conservation and they told me parks and recreation was the way to go. After this strenuous research, I was very glad to get it over with.
Another time I used research was when I restored my car. When I bought the rusty seventy Chevelle convertible, I thought there was no hope for it. I had little experience with restoration of vehicles and figured it would t ...
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The Solar System
Number of Words: 428 / Number of Pages: 2
... once, which is approximately one day. The sun orbits the sun ever 365.25 days. The average surface temperature is 15 degrees. The distance from the sun is 150million km (93 million miles). The sun is 150million km (93 million miles) away from earth. It is 1.4million km (864,000 miles) in diameter. Its surface temperature is 5,800 degrees Celsius (10,472 degrees Fahrenheit).
As the earth rotates on its axis the sun can only shine at one side at a time. When the earth spins around one side receives the light of day and the other is darkness of night. The earth turns in a counter-clockwise dir ...
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Hurricanes
Number of Words: 907 / Number of Pages: 4
... the southeast.
are characterized by strong winds and pouring rain. Thunderstorms and waterspouts appear in the storm's cloud system. All contain an eye. The eye of a hurricane is a low pressure, calm area in the middle of the storm. The air in the eye is sinking and this causes there to be no rain in this area and little wind. This gives the impression that the storm has passed through. It is not safe yet though. Within a few hours depending on the size of the hurricane the other side of the storm will sweep through an area with the same force as the front end. Around this eye is a ring ...
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Angina
Number of Words: 801 / Number of Pages: 3
... Like any other organ, the heart requires a steady flow of oxygen and nutrients to provide energy for rmovement, and to maintain the delicate balance of chemicals which allow for the careful electrical rhythm control of the heart beat. Unlike some other organs, the heart can survive only a matter of minutes without these nutrients, and the rest of the body can survive only minutes without the heart--thus the critical nature of these syndromes.
Causes of blockage range from congenital tissue strands within or over the arteries to spasms of the muscular coat of the arteries themselves. By far the m ...
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James Watson's The Double Helix: A Review
Number of Words: 1915 / Number of Pages: 7
... on
DNA research. Wilkins had an assistant, Rosalind Franklin (also known as Rosy).
Initially, Wilkins thought that Rosy was supposed to be his assistant in
researching the structure of DNA because of her expertise in crystallography;
however, Rosy did not want to be thought of as anybody's assistant and let her
feelings be known to others. Throughout the book there is a drama between
Wilkins and Rosy, a drama for the struggle of power between the two.
Watson's "adventure" begins when he receives a grant to leave the United
States and go to Copenhagen to do his postdoctoral work with a biochemis ...
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Hepatitis B
Number of Words: 1329 / Number of Pages: 5
... for non-immune individuals after a known exposure (e. g. needle stick).
Consequences of HBV Infection
HBV causes acute and chronic hepatitis. The chances of becoming chronically infected depends upon age. About 90% of infected neonates and 50% of infected young children will become chronically infected. In contrast, only about 5% to 10% of immunocompetent adults infected with HBV develop chronic hepatitis B. In some individuals who become chronically infected, especially neonates and children, the acute infection will not be clinically apparent.
Acute hepatitis B can range from subclinica ...
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The Sun
Number of Words: 668 / Number of Pages: 3
... These tools have enabled us to better understand the
magnetic field of the sun and individual characteristics of the sun.
Pictured
above is Galileo
Composition of the Sun
The radiation that Earth receives from the sun is quite remarkable.
The radiation that we receive varies less than 1% over a period of twenty
four hours. However this less than one billionth of the radiation given
off by the sun. This energy comes from deep with in the sun. The
composition of the sun consists of 71percent hydrogen, 27 percent helium,
and 2 percent of other heavier elements. This makes th ...
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