The origin of Life
There are many theories where life came from, but none of them is proven to be the right one. The obvious theory that life originated on earth is not accepted by everyone. One reason of disbelief in this theory that life originated on earth is a lack of time. It was an early belief that life originated through a slow and long process (many scientists do not share this belief though), probably too short and too long for the time life had on our planet. Life must have been formed within a period of approximately 200 million years. "If we represent the whole Christian era - two thousand years - by one inch, the time available for the emergence of life could measure as much as 1.5 miles." Another theory called "panspermia" claims that life was created somewhere else, not on earth, and traveled to our planet via meteorites or comets. Another version of "panspermia" claimed by Francis Crick and Leslie Orgel is that life was brought to earth by a spaceship sent by a more intellectual species. This theory is called "directed panspermia". The last theory might be the least likely one, since there is no actual evidence for spaceships or species from other planets. The "panspermia" theory can not be disproved and it might be possible that life came to earth via a comet. Bodies like comets contain organic molecules which are similar to the molecules of living organisms, but most scientists say that reactions creating these molecules take "place out there". We can not find an answer for this question since neither theory can totally be proven. Supporters of the "panspermia" theory say that there was not enough time for life to originate. Supporters of the theory that life originated on earth can not prove that life did not come from outer space. The Christian theory that life was created by God is abstract and will not be discussed further in this paper. Personally I believe in the theory that life was born on earth.
Six elements are needed to create life. Almost every organic matter can be summarized symbolically in these six different elements: carbon (C), hydrogen (H), nitrogen (N), oxygen (O), phosphorus (P), and sulfur (S). One also says that life can be explained by the formula CHNOPS. These are the main characters in the creation of life chemically.
Ehrenhalt, Alan (2012-04-24). The Great Inversion and the Future of the American City (Kindle Location 283). Knopf Doubleday Publishing Group. Kindle Edition.
Now that the idea of a global war has been established, it is important to establish the role of the United States (USA). One of the most important documents in establishing this was the ‘Truman Doctrine’. President Harry S. Truman (1945-53) outlined what would become the basis of US foreign policy for the duration of the Cold War. This was the policy of containment – trying to keep communism from spreading to the rest of the world. His speech to Congress in March 19...
The Origin of Life has long been debated about. In result to that there are many hypotheses that each claim that’s how life started. Some of them claim life came from space, others from clay and even hydrothermal vents. However, they’re only theories which is why many experiments and research going into proving them. Many great minds such as Alexander Oparin, Gunter Wachtershauser, Robert Vrijenhoek and Louis Pasteur are the brains behind the hypotheses which is what makes them even more interesting to test out. The hypotheses that I researched were the Primordial Soup Hypothesis, the Iron-Sulfur World Hypothesis, the Deep Sea Vent Hypothesis, the RNA World Hypothesis, the Community Clay Hypothesis and the Panspermia Hypothesis.
Richard C. Nelson, the author, is a professor in the School of Landscape Architecture and Planning and the Planning Degree program at the University of Arizona. He has made substantial contributions in real estate analysis and urban growth trends. Nelson also created the term ‘megapolitan’ which he predicts the United States will have over twenty by 2040. These megapolitans are the result of the reverse sprawl and creating major economic centers, which will make America globally competitive. Nelson’s background ties in to many of his ideas in the book, with the main points focusing on demographic changes, housing trends, more space for future jobs and the benefits of reshaping metropolitan America. Changing demographics support the notion that more people are choosing an urban lifestyle over sprawl, which means a higher preference of
Parkinson’s disease affects patients in various ways with the most observable being muscle weakness, tremor, and rigidity; these symptoms directly influence and reduce the function of the respiratory and phonatory systems. Articulatory, velopharyngeal, laryngeal, and respiratory muscles lose control and some function due to the loss of dopamine in the central nervous system. Facial expression in Parkinson's patients can appear emotionless or diminished. Parkinson’s disease decreases the fine movements of the tongue and jaw that are imperative to articulation. This reduced oral muscular control is also associated with hypoesthetic oropharynx function. With this loss of key sensory stimuli, patients with Parkinson’s disease...
There are two possibilities in relation to the origin of life: Either a supernatural being (God) created life or all life evolved on its own. Many people, who are known as
Parkinson disease (PD), also referred to as Parkinson’s disease and paralysis agitans, is a progressive neurodegenerative disease that is the third most common neurologic disorder of older adults. It is a debilitating disease affecting motor ability and is characterized by four cardinal symptoms: tremor rigidity, bradykinesia or kinesis (slow movement/no movement), and postural instability. Most people have primary, or idiopathic, disease. A few patients have secondary parkinsonian symptoms from conditions such as brain tumors and certain anti-psychotic drugs.
According to the theory of evolution, approximately 3.8 billion years ago some chemicals accidentally structured themselves into a self-replicating molecule. This beginning spark of life was the ancestor of every living thing we see today. Through the processes of mutation and natural selection, that simplest life form, has been shaped into every living species.
In believing that “today’s cities play a different economic role than they did in the past,” Kotkin argues that “At best, Jacobs’s compelling portrait from 1961 is something of an anachronism,” meaning that her lessons are out of place in the current era (Kotkin). Kotkin pulls in details from researcher Gary Evans saying, “Families in urban apartments today… generally have far weaker networks of neighbors than their suburban counterpart, a generally more stressful home life, and significantly less ‘social support’” (Kotkin). Kotkin further implies that Jacobs is outdated when quoting her mentioning how suburbs are not a good place to bring up children (Kotkin). Today the general consensus is that cities are not a safe place to raise a family and that the city is just as stepping stone towards career advancement that will eventually lead a person to a domesticated suburbia lifestyle (Kotkin). “Jacobs… instinctively hated where families were in fact headed: the suburbs” claiming that “neighborhoods like her own... [were] ideal places where locals watched out for each other” (Kotkin). Many families flee cities in hopes of finding a safer community for their children. “[I]n 2011 children 5-14 constitute about seven percent in core districts… [which is] roughly half the level
Goldmann, David R., and David A. Horowitz. American College of Physicians Home Medical Guide to Parkinson's Disease. New York: Dorling Kindersley Pub., 2000. Print.
Many people around the world today suffer from Parkinson’s disease and other movement disorders. A movement disorder is a disorder impairing the speed, fluency, quality, and ease of movement. There are many types of movement disorders such as impaired fluency and speed of movement (dyskinesia), excessive movements (hyperkinesia), and slurred movements (hypokinesia). Some types of movement disorders are ataxia, a lack of coordination, Huntington's disease, multiple system atrophies, myoclonus, brief, rapid outbursts of movement, progressive supranuclear palsy, restless legs syndrome, reflex sympathetic dystrophy, tics, Tourette's syndrome, tremor, Wilson disease, dystonia, which causes involuntary body movement, and Parkinson's disease. Parkinson’s disease, Tourette’s syndrome, and tics are one of the most widely known of these disorders, known to impair people of movements and rob them of their lives.
Most signs and symptoms of Parkinson disease correspond to one of three motor deficiencies: bradykinesia, akinesia, tremor, and rigidity. The first two qualities are usually present before tremor, but often attributed to aging by the patient and even the physician, and thus the disease is rarely diagnosed until tremor becomes evident much later. An average of 80% of the nigrostriatal neurons may have already degenerated by the time Parkinsonism is diagnosed, which complicates treatment (Fitzgerald, 130). Bra...
Being single also has its positive features. You can do whatever you want to; you are not limited by girlfriend or wife who usually you have to listen to. We decide about our life and no matter what we do, it is always our choice, basically we are responsible for decisions that we made.
In fact, beside freedom, single people also feel lonely and detached. According to psychological terms, they are lacking of belonging need which is the basic self-actualization of human beings. In contrast, love and companionship in marriage will fulfill belonging need. They will complete people life and also revitalize them after experiencing failure. My closest friend once told me that even though she earlier succeeds in her career than any other peers, she always feels empty, incomplete, and struggled in her own way. Because her career is now stable, I suggested that she should take care of herself more and find someone to whom she can share her success. Now she has two lovely kids and seems to be satisfied with her life. Personally, I used to dream of a happy marriage with someone I love in the rest of my life. However, after several separations, I begin to accept the single life and the lonely. Being single can heal my past disconsolation and keep me moving on. I can also readjust my injured emotion when I am alone. Therefore, I am able to reform myself a stronger and more independent person. Our emotion is significantly different when we are single and married. However, single life or married life is not as important as being fulfilled and happy with the life we choose to
Presently, the Big Bang theory is the most logical scientific explanation of how the universe began. The majority of cosmologists favor the Big Bang theory and the idea that the expanding universe had an initial, incredibly hot and dense start (Peterson 232). According to the Big Bang theory, at one point in time, more than 12 billion years ago, matter was condensed in a single place, and a huge explosion scattered matter out is all directions (“Big Bang Theory” 403). At the moment of its origin, the universe was infinitely dense and hot, but as the expansion occurred, the universe cooled and became less dense (Narlikar 12). The debris the spewed from the initial explosion became the building blocks of matter, forming the planets, stars, and galaxies (Narlikar 12). Officially, the Big Bang model is called the standard cosmological model (SCH), and it has been the most widely accepted theory of the origin of the universe since the 1960s (Rich and Stingl 1). Most astronomers are in agreement that the universe’s beginning can be traced back to 10 to 15 billion years ago following some type of explosive start (Narlikar 12). Big Bang theorists have estimated the actual bang occurred 13.7 billion years ago and was followed by an inflationary period that created time, matter, and space (Rich and Stingl 1).