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Bulemia

... develop the disorders because of sexual repression in childhood. Dissatisfied with the magazines explanation, I decided to investigate the topic further. I went to Palmer College of Chiropractic's library hoping to consume as much information as possible to prove Parents' Magazine wrong. I found several medical journals, psychiatric journals, and books on the topic of eating disorders that could affirm my feelings. As I tried to rationalize my friend's behavior, I decided that social acceptability had to have played a lar ...

Number of words: 651 | Number of pages: 3

Global Warming

... the surface, the surface gives off infrared radiation, or heat, that the gases trap and keep near ground level. The effect is comparable to the way in which a greenhouse traps heat, hence the term. Environmental scientists are concerned that changes in the variable contents of the atmosphere--particularly changes caused by human activities--could cause the Earth's surface to warm up to a dangerous degree. Since 1850 there has been a mean rise in global temperature of approximately 1° C (approximately 1.8° F). Even a limited rise in aver ...

Number of words: 711 | Number of pages: 3

What Is Macroevolution?

... change below the level of species, and refers to changes in the frequency within a population or a species of its alleles (alternative genes) and their effects on the form, or phenotype, of organisms that make up that population or species. Another way to state the difference is that macroevolution is between-species evolution of genes and microevolution is within-species evolution of genes. There are various kinds of dynamics of macroevolution. Punctuated equilibrium theory proposes that once species have originated, and adapted t ...

Number of words: 1087 | Number of pages: 4

Crystals: Does Surface Tension Affect The Process Of Crystallization?

... usually form in saturated liquids, but does the property of the liquid affect the rate or formation of these crystals? This experiment has been conducted to prove if that is true or not. INTRODUCTION AND RESEARCH Many scientists have been interested in crystals and the science associated with crystals. Though one knows that certain conditions must be present in order for crystals to form; and if some of these conditions are not present or are not perfect, then the formation of the crystal will be disturbed. One may ask him/herself, ...

Number of words: 1915 | Number of pages: 7

Solar Cells

... is necessary to go back to some basic atomic concepts. In the simplest model of the atom, electrons orbit a central nucleus, composed of protons and neutrons. each electron carries one negative charge and each proton one positive charge. Neutrons carry no charge. Every atom has the same number of electrons as there are protons, so, on the whole, it is electrically neutral. The electrons have discrete kinetic energy levels, which increase with the orbital radius. When atoms bond together to form a solid, the electron energy levels merge into b ...

Number of words: 1104 | Number of pages: 5

History Of The Prostate Gland

... through the middle of it, a growth spurt of the prostate will squeeze the urethra and begin to choke off the urinary flow. This can effect the ablility to urinate and perform sexually. SYMPTOMS OF PROSTATE CANCER Prostate cancer occurs when some of the cells that make up the prostate gland escape from the normal controls on their growth and start to divide, grow and spread in an uncontolled manner. At first the growth of the cancer occurs very slowly and is usually limited within the prostate gland. Later on in the course ...

Number of words: 517 | Number of pages: 2

Tourette Syndrome

... system. The nervous system consists of the brain, spinal cord, nerve cells, and fibers that extend throughout the body. When healthy, the nervous system reacts and responds to nerve impulses that allows us to maintain homeostasis. The nervous system can be broken down further into its three basic functions: sensory functions, integrative functions, and motor functions. In sensory functions, your body’s sensory receptors detect many different stimuli in and outside of your body. For example, your sensory receptors may detect a change in ...

Number of words: 1363 | Number of pages: 5

Holograms

... it, you can't see. And much like the ripples in a pond, light travels in waves. When you look at, say, an apple, what you really see are the waves of light reflected from it. Your two eyes each see a slightly different view of the apple. These different views tell you about the apple's depth -its form and where it sits in relation to other objects. Your brain processes this information so that you see the apple, and the rest of the world, in 3-D. You can look around objects, too -if the apple is blocking the view of an orange behind it, ...

Number of words: 1072 | Number of pages: 4

Cystic Fibrosis

... respiratory system, and apocrine glands. Usually begins in infancy and is characterized by chronic respiratory infection, pancreatic insufficiency, and increased electrolytes in sweat (Shwachman, 1997). The abnormal gene, which causes an increased presence of chlorine within the exocrine cells, was identified in 1989 and is known as transmembrane conductance regulator (CFTR) (Hopkin, 1998). is the most common genetic disorder in the white population (Hopkin, 1998). Almost every article or book about begins with a statement similar t ...

Number of words: 1238 | Number of pages: 5

Boiling Water

... pressure of the air pushing down on the surface of the water). In the liquid, the water molecules are attracted to one another by their very nature and further held together by the pressure of the atmosphere pushing down on the surface of the liquid. As they are heated they gain energy to begin to pull away from one another. When they gain enough energy, they are able to separate and to overcome the force of the atmospheric pressure and form the gas (water vapor) that makes up the bubbles you see in the boiling process. The standard tem ...

Number of words: 340 | Number of pages: 2

UFO Sightings

... appearing repeatedly in the skies over certain locales, aberrations in the workings of automobiles, and radiation and other damage found in vegetation. The 50-page review, being released today, asserts that the scientific community might learn something worthwhile if it can overcome the fear of ridicule associated with the topic and get some funding for targeted research to try to explain these occurrences. "It may be valuable to carefully evaluate UFO reports to extract information about unusual phenomena currently unknown to science," t ...

Number of words: 1024 | Number of pages: 4

History Of The Cell Theory

... the cell without the microscope which was developed by Antoni van Leeuwenhoek a 1674 Dutch maker of microscopes. Leeuwenhoek born in Delft, Holland and had little or no scientific education. Leeuwenhoek also confirmed the discovery of capillary systems. Theodor Schwann a German physiologist born in Neuss and educated at the universities of Bonn, Wurzburg, and Berlin, Schwann was involved in the study of the structure of plant and animal tissues. Along with Matthias Jakob Schleiden a German botanist, Schwann proposed the cell theory. ...

Number of words: 326 | Number of pages: 2

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