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Essays on Science

Meth
Download This PaperWords: 357 - Pages: 2

... Food and water become unimportant after taking it. Seizures and death can occur. Meth can cause: angry, hostile, and anxious feelings, violent behaviors, confusion, mental illness, increased physical activity, loss of appetite, increased heart rate, inability to sleep, strokes can occur, chest pain, increased blood pressure, irregular heart rate, aids and HIV through the use of needles, dependence, tolerance, addiction, and can cause psychosis. The use of Meth is going up. In 1995, 3.9% of high school seniors had used it. That's an increase of 2.7% since 1990. 8 out of 10 people who try Meth will become addicted. Famous people who have done Meth in ...



American Pit Bull Terrier
Download This PaperWords: 2848 - Pages: 11

... I did this also to educate my parents and to tell them some facts and myths of the APBT. After some extensive plead bargaining with them and some facts and pictures, they finally gave in and let me keep her. Well, not really though. I say that because my father of all people fell in love with "Molly" as she is now known. He has said on many occasions that Molly is the best dog he has ever had, and believe me, he has had many. The point is, APBT get a bad name because of the people who own them. In doing research for this paper I have become deeply fascinated with this breed and actually understand a great deal more about the APBT than the average person. ...



Aurora Borealis
Download This PaperWords: 304 - Pages: 2

... for a time in the outermost parts of the Earth's magnetic field, an area called the Van Allen belts. Eventually the plasma is drawn down toward the North and South magnetic poles. Along the way, it ionizes (creates an electric charge within) the oxygen and nitrogen gas it encounters in the atmosphere, causing it to glow. The flow of plasma from the sun is generally continuos, although it occasionally bursts out of holes in the sun's outermost atmosphere. Massive ejections of plasma have also been shown to accompany solar flares, prominences, and sunspots. It is during these periods of highest solar activity that one is most likely to witness aurorae. The auror ...



Bengal Tigers
Download This PaperWords: 263 - Pages: 1

... a territory of 200 square miles. When there is enough food, the tiger lives in a much smaller territorty. It lives in the forest, the grassland, or the swamps. The tiger attacks a variety of prey, mainly deer, antelopes, pigs and buffalo. Once in awhile, it will attack cattle and even humans. There are many stories about the evils done by "man-eating" tigers. They're usually old tigers that are sick or wounded, and cannot hunt normally. The destruction of their usual prey may also cause them to attack humans. As soon as the tiger spots prey, it begins a slow and silent approach. When it is near it's prey, it charges. It may jump onto the prey's back or pin it d ...



Leprechaunism
Download This PaperWords: 1521 - Pages: 6

... recessive, Mendelian inheritance pattern. As stated before, both males and females can be affected. Its occurrence is associated with consanguineous relationships. A consanguineous relationship means that the parents are genetically related (e.g. first cousins). Clinical traits are as follows:  Hyperpigmented skin or as otherwise known, Acanthosis nigricans. This symptom is not exclusive to , as it is caused by high insulin levels. This pigmentation normally occurs in areas of the body where flexing and bending occurs, such as the back of the neck.  Reddening of the skin or erythema. This is caused by localized irritation. Most often the a ...



Comparison Of Prokaryotic And Eukaryotic Cells
Download This PaperWords: 3545 - Pages: 13

... animal cells have a membrane-bound nucleus; hence, they are grouped as eukaryotic cells. The nucleus plays the same role and has the same structure in both plant and animal cells. You can see that the nucleus is present in both animal and plant cells by examining figure A and figure B. Although the nucleus itself remains similar among both plant and animal cells, one difference lies in the positioning of the nucleus within the cell. Due to the central vacuole in a plant cell, the nucleus is usually not located in the center of the cell; rather, it is usually crowded nearer the plasma membrane. In most animal cells, however, the nucleus is located in the center of ...



Fusion 2
Download This PaperWords: 2677 - Pages: 10

... ionized gas consisting of free negative electrons and positive nuclei. This gas constitutes a plasma. Plasma, in physics, is an electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. It is sometimes referred to as the fourth state of matter, distinct from the solid, liquid, and gaseous states. When energy is continuously applied to a solid, it first melts, then it vaporizes, and finally electrons are removed from some of the neutral gas atoms and molecules to yield a mixture of positively charged ions and negatively charged electrons, while overall ...



The Forever Moving Land
Download This PaperWords: 2829 - Pages: 11

... imprints reveal periods of time when the Earth's magnetic fields have actually been reversed. Approximately 4.55 billion years ago, the Earth was just a ball of molten material. Since then, parts of the Earth have cooled forming the solid crust-mantle. This process has been occurring for roughly about 3.8 billion years. The mantle is about 2900 km. thick, which lies above a layer of molten magma that still exists today. The immense heat from the magma (approximately 2700(C) causes convection in the mantle (Figure 1). Convection is caused by non-uniform temperature in a fluid and density differences. This continuous convection is the cause of plate movemen ...



Caffeine 2
Download This PaperWords: 413 - Pages: 2

... is blocking adenosine receptors. As caffeine has a similar structure to the adenosine group, but also has more heavily electrophilic and nucleophilic functional groups than adenosine as, for instance, seen in cyclic AMP. This means that caffeine will fit adenosine receptors as well as adenosine itself will. Thus, cyclic AMP remains active, rather than being broken down. Second among the effects of caffeine is phosphodiesterase inhibition. The phosphodiesterase class of enzymes includes a number of enzymes responsible for breaking down cyclic AMP, thus depriving the body of an energy supply. Caffeine fools phosphodiesterase into attacking it instead, which inhibi ...



Silicon
Download This PaperWords: 1438 - Pages: 6

... Elemental semiconductors are simple-element semiconductor materials such as silicon or germanium. Silicon is the most common semiconductor material used today. It is used for diodes, transistors, integrated circuits, memories, infrared detection and lenses, light-emitting diodes (LED), photosensors, strain gages, solar cells, charge transfer devices, radiation detectors and a variety of other devices. Silicon belongs to the group IV in the periodic table. It is a grey brittle material with a diamond cubic structure. Silicon is conventionally doped with Phosphorus, Arsenic and Antimony and Boron, Aluminum, and Gallium acceptors. The energy gap of sil ...




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